NDakter Bike Lock 5-Digit Resettable Chain Lock (Combination, Heavy-Duty)
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Product description
Key takeaways
If you’re tired of juggling keys or worried someone could brute-force a basic chain lock, the NDakter bike lock is built around a 5-digit resettable combination. On paper, that extra digit count (it’s described as 5 digits instead of 4) is the kind of small change that can make a real difference in everyday theft attempts.
It also leans into practical protection: a zinc alloy lock cylinder for durability, a fairly thick alloy steel chain, and an outer fabric wrap meant to reduce scratches on your bike frame. It’s not a “magic shield,” of course—no lock is—but it’s a thoughtful design for typical outdoor parking at home, by a fence, or in a garage driveway.
What you’ll notice day to day
The combination mechanism is the main day-to-day convenience. You set your own number, and the lock is resettable, so you’re not stuck with a preset code forever. The base/default code is listed as 00000, and it’s intended to be changed.

The no-key approach is a big deal if you’ve ever forgotten a key on the wrong side of the house. You enter the code to lock and unlock, which keeps the process simple—especially when you’re already dealing with a helmet, bags, or a quick stop.
There’s also a comfort and protection detail that doesn’t get enough attention with some chain locks: the chain is wrapped with a polipropylene fabric layer described as scratch-resistant and abrasion-resistant. That matters if you regularly park close to curbs or rough surfaces, or if you don’t want the lock rubbing against your frame.
Where it shines
This lock is positioned as a heavier-duty chain option rather than a lightweight carry-around cable. The description specifically calls out:


- A zinc alloy locking cylinder for sturdiness.
- An alloy steel chain described as resistant to drilling and anti-technology unlocking.
- A resettable 5-digit combination with 100,000 possible combinations, and a simple idea behind it: the more combinations you can choose, the harder it is to guess.

Length is also part of the “does it actually work for my routine?” question. It’s listed with multiple length options (2.62/3.2/4.27/5/6Ft). Depending on which length you choose, it may be enough to secure multiple items—like the listing suggests: 2–3 bikes together if you pick a longer version.
A concrete use case
Imagine you park two bikes near a sturdy fence post. If you select a longer chain length, you can loop the chain around both bike frames (and ideally through the same anchor point), then close and secure with your personalized 5-digit code. The fabric wrap helps reduce the “chain scraping paint” problem that can happen when you lock directly to the frame.
Limits and what to consider before buying
This is the part to be honest about. Even with a 5-digit combination and reinforced materials, the lock’s strength will still depend heavily on your parking scenario—like how accessible your bike is, what you can anchor to, and whether you’re able to keep the chain fully engaged with a solid fixed object.

Also, the lock is described as suitable for a range of items (bikes, scooters, motorcycles, etc.), but the listing doesn’t provide details about any specific mounting method or whether every surface you plan to use is “ideal.” In other words, it can be versatile, but you’ll still want a thick enough anchor point for the chain to fully wrap.
Finally, the default code is 00000. If you forget to change it, you’ve basically skipped the whole point of reconfiguring the combination.
Tech specs


- Name: NDakter Bike Lock (Chain Lock, 5-Digit Combination)
- Type: Resettable combination chain lock (no-key unlocking)
- Format: 5-digit combination code (default code listed as 00000)
- Size: Available chain lengths listed as 2.62/3.2/4.27/5/6Ft
- Capacity: Listed as long enough (depending on selected length) to lock 2–3 bikes together
- Material: Zinc alloy lock cylinder, alloy steel chain, polypropylene fabric wrap
- Color: Not specified in the provided information
- Security approach: Described as resistant to drilling and anti-technology unlocking
- Code security: Listed as 100,000 possible combinations
Who it’s for (and who should skip it)

It makes the most sense if you want a resettable, keyless chain lock for everyday street or driveway parking, and you specifically like the idea of setting your own 5-digit combo. You’ll also appreciate it if you care about protecting your frame from scratches, since the chain is wrapped with a scratch-resistant fabric layer.
You may want to skip it if your primary goal is maximum deterrence in a high-risk theft environment where only the most serious, purpose-built hardware tends to feel adequate. This kind of lock is strong for its category, but the real-world outcome still depends on anchor quality and how close the bike is to an easy target.
Final verdict
Should you buy it? The NDakter Bike Lock is a solid buy if you want a durable, heavy-duty chain lock with a resettable 5-digit combination and the convenience of no keys. The scratch-resistant fabric wrap and the choice of chain lengths are practical touches that line up with everyday use.
Don’t buy it if you can’t anchor it to a genuinely solid object, or if you’re the type who may forget to change the default code after purchase. If you pick the right chain length for your parking setup, it looks like the kind of lock that handles daily convenience without ignoring basic security.

Quick overview FAQs
Is this lock keyless?


Yes. The lock uses a combination mechanism for locking/unlocking, so there’s no key mentioned as required for operation.
Can you change the combination?
According to the listing, the code is resettable and you can set your own 5-digit combination.

What’s the default combination?
The provided information lists the default code as 00000.
How is it supposed to protect the bike?
The chain is wrapped in a polypropylene fabric described as scratch-resistant and abrasion-resistant, helping reduce marks on the bike frame.
What kinds of items is it suitable for?
The listing mentions bikes, scooters, motorcycles, electric bikes, skateboards, grills, stairs, doors, fences, and more—though your actual security still depends on what you anchor to.
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