portable lock

Common types include keyed padlocks (small padlocks and keyed luggage/mini padlocks), cable and chain bike locks, and combination luggage or cable locks.

Manufacturers generally provide simple reset steps. Many locks ship with a default code (for example 0-0-0-0); to change it you set the dials to the default, use the built-in reset knob or button, choose the new digits, then lock to save. Other models use a reset button plus dial steps for three-digit combinations—follow the included instructions for that model.

Portable locks are intended as deterrents and provide basic protection against casual theft; they are not designed to resist heavy-duty tools or determined attacks.

Lock bodies are often made from hardened steel, iron, or zinc alloy, and cables are frequently braided steel.

Protective finishes include vinyl-covered bodies and vinyl or sleeve coverings over braided cables; some listings also note water- and rust-resistant coatings or durable metal bodies.