combi lock

Typical combination cable locks range from about 4 ft (1.2 m) to 6 ft (1.8 m) in length, with cable diameters commonly around 5/16 in (8 mm) to 1/2 in (13 mm).

Many small padlocks and luggage locks use three-digit combinations, while bike locks and cable-style combination locks more commonly use four-digit or four-dial combinations.

For set-your-own locks the listings show simple reset steps: open the lock at the factory combination (often 0-0-0-0), engage the reset mechanism (turn or press it as directed), choose the new digits, then return the control to its original position to save the code.

Dial-style combination padlocks commonly list a body width of 1-7/8 in (48 mm), a shackle diameter of about 9/32 in (7 mm), and a shackle length around 3/4 in (19 mm).

Advertised features include hardened or stainless-steel shackles, anti-shim locking mechanisms, automatic locking levers or scramble functions, preset or set‑your‑own 3‑ and 4‑digit combinations, braided-steel cables with vinyl coatings, and biometric options (palm‑vein or fingerprint) on some smart locks.

Warranty terms shown include an “18 Month Limited Warranty” for the smart lock and several references to lifetime coverage such as “Lifetime Limited Warranty” or a “Lifetime Guarantee” for mechanical locks.