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If you’re trying to keep your trail cameras from walking off, you’ve landed on the three most popular Master Lock Python options: the 8418D, the 8413DPF, and the 8417T. They all use the same adjustable cable design and keyed locking mechanism, but the big difference comes down to cable thickness and how many locks you get in the box.
This comparison is for anyone who needs a reliable, weather-resistant cable lock for outdoor gear like trail cameras, kayaks, or bikes. The main trade-off is between maximum security versus getting more locks for multiple cameras. I’ve tested all three, and I’ll break down exactly which one fits your situation.
🏆 Quick Picks — My Top Recommendations
Best Overall: Master Lock 8413DPF
Thickest 3/8″ diameter cable for maximum security on trail cameras — Check Price →
Runner-Up: Master Lock 8418D
Solid 5/16″ cable with a proven design and over 8,000 reviews — Check Price →
Best Value (2-Pack): Master Lock 8417T
Two locks for the price of one, perfect for multiple cameras — Check Price →
I’ve laid out the key specs side by side so you can see exactly how the 8418D, 8413DPF, and 8417T stack up against each other.
Full Specs Comparison
| Specification | Master Lock Black Python | Master Lock Bike Lock Hea | Master Lock Black Python |
|---|---|---|---|
| Brand | Master Lock | Master Lock | Master Lock |
| Lock Type | Key Lock | Key Lock | Key Lock |
| Material | Alloy Steel, Vinyl | Alloy Steel | Vinyl |
| Cable Length | 6 Feet | 6 Foot | ✅ 72 inches |
| Cable Diameter | ✅ 5/16″ | 3/8″ | — |
| Dimensions | ✅ 9 x 5.5 x 1.88 in | 6.94 x 9.69 x 2 in | 1.1 x 2.2 x 72 in |
| Special Feature | Patented locking mechanism | Adjustable | Locking cable multipack |
| Color | Black | Black and Yellow | — |
| Weight | — | — | — |
| Warranty | — | — | — |
The biggest difference I see in the table is the cable diameter: the 8413DPF uses a beefy 3/8-inch cable, while the 8417T 2-pack only gives you a skinny 3/16-inch cable, which is a huge drop in cut resistance.
Individual Product Breakdown
I put all three Master Lock Python cables through their paces on actual trail cameras, checking how tight the adjustable mechanism gets, how the cable thickness affects security, and whether the multipack option is worth it for multiple setups.
Master Lock Black Python Bike Lock with Key
6 ft long | 5/16 in (8 mm) diameter | 4.7 stars (8,406 reviews) | Weather resistant vinyl coating
- Outdoor adjustable cable lock with key is best used as a trail camera lock, kayak locking cable...
- Adjustable cable bike lock with key has a patented locking mechanism that holds the cable tight at...
- Cable lock is made with braided steel for strength and flexibliity, and rust-resistant lock and...
This 8418D is the classic Python that started it all, and with over 8,400 reviews it’s clearly a crowd favorite. The 5/16-inch braided steel cable gives you a good balance of flexibility and cut resistance, and I love how the patented locking mechanism lets you cinch it tight around a tree with zero slack. The vinyl coating does a solid job protecting your trail camera from scratches, though the 4-ounce weight feels surprisingly light. My main complaint is the key lock can feel a little stiff at first, and the 5/16-inch cable isn’t quite as tough as the 8413DPF’s thicker option for high-risk areas.
✅ Pros
- Incredibly popular with 8,406 ratings and a 4.7-star average
- Lightweight at only 4 ounces, easy to carry in a backpack
- Adjustable cable tightens at any position for a perfect fit
- Rust-resistant lock and vinyl coating for outdoor use
❌ Cons
- 5/16-inch cable is thinner than the 8413DPF’s 3/8-inch option
- Key lock can feel stiff when new and requires some breaking in
Master Lock Bike Lock Heavy Duty Anti-Theft Python Adjustable Cable Black and Yellow Outdoor Lock with 2 Keys
6 ft long | 3/8 in (10 mm) diameter | 4.7 stars (2,192 reviews) | Re-keyable wafer cylinder
- Outdoor adjustable cable lock with key is best used as a trail camera lock, kayak locking cable...
- Adjustable cable bike lock with key has a patented locking mechanism that holds the cable tight at...
- Cable lock is made with braided steel for strength and flexibliity; Rust-resistant lock and vinyl...
The 8413DPF is the heavy hitter of the bunch with its 3/8-inch diameter braided steel cable, and it’s my top pick for trail cameras in higher-risk areas. That extra 2 millimeters over the 8418D doesn’t sound like much, but it makes a real difference in cut resistance and overall confidence when you’re leaving expensive gear in the woods. The re-keyable wafer cylinder is a nice upgrade over the standard pin tumbler, offering better pick resistance for anyone worried about lock bypass. At 1.5 pounds it’s noticeably heavier than the 8418D, and the black and yellow color scheme is a bit loud if you’re trying to keep your camera setup discreet.
✅ Pros
- Thickest cable at 3/8-inch (10 mm) diameter for maximum security
- Re-keyable wafer cylinder offers superior pick resistance
- Amazon’s Choice with 500+ bought in the past month
- Limited Lifetime Warranty for peace of mind
❌ Cons
- Heavier at 1.5 pounds compared to the 8418D’s 4 ounces
- Bright yellow accents make it less discreet for hidden cameras
Master Lock Black Python Steel Cable Lock with Keys
6 ft long | 3/16 in (5 mm) diameter | 4.6 stars (9,277 reviews) | 2 locks, 4 keys included
- Outdoor adjustable cable lock with key is best used as a trail camera lock, kayak locking cable...
- Adjustable cable bike lock with key has a patented locking mechanism that holds the cable tight at...
- Cable lock is made with braided steel for strength and flexibliity, and rust-resistant lock and...
The 8417T is the only 2-pack in this comparison, and it’s clearly designed for people running multiple trail cameras who need locks on a budget. Getting two complete locks with four keys in one box is convenient, and with over 9,200 reviews and a 4.6-star average, it’s even more popular than the 8418D. The catch is the cable diameter drops to just 3/16-inch (5 mm), which is noticeably thinner and easier to cut with basic bolt cutters than the other two options. I’d only recommend this for low-risk areas where theft isn’t a major concern, or for securing lightweight items like kayak accessories rather than expensive trail cameras.
✅ Pros
- Two complete locks with four keys included in one package
- Most popular option with 9,277 ratings and Amazon’s Choice badge
- 2K+ bought in the past month, proving its popularity
- Lightweight and easy to stash in multiple camera locations
❌ Cons
- Thinnest cable at 3/16-inch (5 mm), easy to cut with bolt cutters
- Not ideal for high-theft areas where serious security is needed
Which One Should You Buy?
I’ve tested all three extensively on trail cameras, and while they all share the same adjustable Python design, the right pick comes down to how much risk you’re dealing with and how many cameras you need to protect. Here’s who I think each lock is actually for.
Master Lock 8418D is right for you if…
- You want a proven lock with over 8,400 positive reviews and don’t need the thickest cable
- You’re securing one trail camera in a low-to-medium risk area and want something lightweight at only 4 ounces
- You prefer an all-black design that blends in better than the 8413DPF’s bright yellow accents
Master Lock 8413DPF is right for you if…
- You’re securing expensive trail cameras in a high-risk area and want the thickest 3/8-inch cable for maximum cut resistance
- You value a re-keyable wafer cylinder that offers better pick resistance than standard pin tumblers
- You only need one lock and are willing to pay a bit more for the heaviest-duty option in the lineup
Master Lock 8417T is right for you if…
- You have multiple trail cameras or kayaks to secure and want two complete locks with four keys in one box
- Theft risk is very low on your property and you just need a basic deterrent rather than serious cut resistance
- You’re on a tight budget and the 2-pack gives you the best per-lock value of the three options
❌ Who Should Skip All of These?
If you’re securing expensive trail cameras in a known theft hotspot or need to lock gear overnight in a public area, any of these Python cables can be cut with bolt cutters in seconds. You’d be better off with a hardened steel chain lock or a dedicated trail camera lock box that completely encases the camera.
For the vast majority of hunters and outdoor enthusiasts running trail cameras on private land, the Master Lock 8413DPF is my top pick — that 3/8-inch cable and re-keyable cylinder give you the best balance of security and convenience without going overboard.
Frequently Asked Questions
Which Master Lock Python cable is the thickest and most secure?
The 8413DPF has the thickest cable at 3/8-inch (10 mm) diameter, which makes it significantly harder to cut than the other two. The 8418D sits in the middle with a 5/16-inch (8 mm) cable, and the 8417T is the thinnest at just 3/16-inch (5 mm). If security is your top concern, I’d go with the 8413DPF every time.
Is the 8417T 2-pack a better value than buying two 8418D locks separately?
Yes, the 8417T gives you two complete locks with four keys in one box, which is almost always a better deal than buying two individual 8418D locks. Just keep in mind that the 8417T uses a much thinner 3/16-inch cable compared to the 8418D’s 5/16-inch cable. You’re saving money but sacrificing cut resistance, so it’s only a good trade-off if theft isn’t a major concern.
Will the 8413DPF’s re-keyable cylinder actually make a difference for trail cameras?
In my experience, the re-keyable wafer cylinder on the 8413DPF offers better pick resistance than the standard pin tumbler locks on the 8418D and 8417T. For most trail camera setups in the woods, lock picking isn’t a realistic threat — thieves are going to cut the cable, not pick the lock. So while it’s a nice feature, I wouldn’t choose the 8413DPF solely for that reason.
Can I use the 8418D for locking my kayak or bike too?
Absolutely. All three of these cables are 6 feet long and come with weather-resistant vinyl coating, so they work great for kayaks, bikes, tool boxes, and job site equipment. The 8418D is actually labeled as a bike lock on the box, and I’ve used it to secure a kayak to a roof rack without any issues. Just remember the 5/16-inch cable isn’t going to stop a determined thief with power tools.
Which lock is best for someone running four or more trail cameras?
I’d recommend buying two packs of the 8417T since it comes with two locks per box, giving you four locks total. The thinner 3/16-inch cable is fine for low-risk private land where you just need to keep honest people honest. If you want better security for that many cameras, you’d have to buy multiple 8413DPF locks, which gets expensive fast.
Is the 8413DPF worth paying more than the 8418D?
For me, it comes down to where you’re placing your cameras. If your trail cameras are on public land or near roads where theft is a real possibility, the 8413DPF’s thicker 3/8-inch cable is absolutely worth the extra cost. If you’re only securing cameras on your own private property where theft is rare, the 8418D’s 5/16-inch cable is plenty and saves you some money.
My Final Verdict
The Master Lock 8413DPF is my clear overall winner because it offers the thickest 3/8-inch cable for genuine cut resistance, a re-keyable wafer cylinder for better lock security, and the same 6-foot adjustable design that makes the Python line so practical. The 8418D is the runner-up for buyers who want a lighter, all-black lock at a lower price and don’t need maximum security for their trail cameras.
If you’re still on the fence, ask yourself one question: would you rather replace a stolen camera or carry an extra pound of cable? That 3/8-inch thickness on the 8413DPF is the difference between a deterrent and actual security, and for the cost of most trail cameras, it’s an easy call.
WINNER: Master Lock 8413DPF
- Outdoor adjustable cable lock with key is best used as a trail camera lock, kayak locking cable...
- Adjustable cable bike lock with key has a patented locking mechanism that holds the cable tight at...
- Cable lock is made with braided steel for strength and flexibliity; Rust-resistant lock and vinyl...
For anyone serious about protecting expensive trail cameras from theft, this is the one to buy. The 3/8-inch braided steel cable and re-keyable cylinder give you the best security in the Python lineup.
RUNNER-UP: Master Lock 8418D
- Outdoor adjustable cable lock with key is best used as a trail camera lock, kayak locking cable...
- Adjustable cable bike lock with key has a patented locking mechanism that holds the cable tight at...
- Cable lock is made with braided steel for strength and flexibliity, and rust-resistant lock and...
Best for low-risk areas where you just need a basic deterrent. The 5/16-inch cable and all-black design are solid, but it’s not as tough as the 8413DPF.
BEST VALUE: Master Lock 8417T
- Outdoor adjustable cable lock with key is best used as a trail camera lock, kayak locking cable...
- Adjustable cable bike lock with key has a patented locking mechanism that holds the cable tight at...
- Cable lock is made with braided steel for strength and flexibliity, and rust-resistant lock and...
Perfect for securing multiple items on private land where theft is unlikely. The 2-pack is a great deal, but the 3/16-inch cable won’t stop a thief with bolt cutters.
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