change lock combination

These locks commonly use three‑digit and four‑digit dials. Product listings often refer to these as 3‑dial (three‑digit) and 4‑dial (four‑digit) combination mechanisms.

A four‑digit combination lock provides 10,000 unique codes (0000 through 9999).

TSA‑accepted luggage locks are designed so Transportation Security Administration screeners can open, inspect, and relock bags without cutting the lock. Product listings label these locks as TSA‑accepted.

Common materials listed include hardened steel, steel, brass, zinc alloy, various metals, and plastic. Some travel locks also note a vinyl‑covered steel cable.

Shackle dimensions vary by model and are listed in both inches and millimeters. Examples in the listings include smaller shackles (about 0.38 in × 0.69 in), medium measurements noted as roughly 22–25 mm, and some products showing larger shackles listed in inches (around 3 in). Always check the product specifications for the exact shackle width and length before buying.

Some locks ship with a preset code (for example a preset three‑digit code such as 0‑1‑0). Product text and the user manual or technical specifications provide the specific combination reset instructions—refer to those documents for the exact procedure.

Listings reference several mechanisms, including pin‑tumbler designs, anti‑shim technology, and double‑locking lever mechanisms.