locker lock with code

Preset locks ship with a factory code (for example, many are preset to 0‑0‑0‑0) and cannot be changed by the user; resettable locks let you set and later change your own code. Product listings usually label each model as “preset” or “resettable.”

Body widths typically range from about 30 mm (1‑3/16 in) up to about 64 mm (2‑1/2 in). Shackle diameters and widths vary roughly from about 5 mm (3/16 in) up to around 25 mm (≈1.0 in), and shackle lengths are listed in ranges such as about 19–22 mm up to about 25 mm (1.0 in), depending on the model.

A 4‑digit combination dial provides up to 10,000 unique combinations.

These combination locks are sold as single units and in multi‑packs; common quantities include single (1), two‑packs, and four‑packs.

Commonly highlighted security features include hardened steel or stainless‑steel covers, hardened or reinforced steel shackles, anti‑shim locking mechanisms, and solid metal or zinc‑alloy bodies for added durability.