Listings show padlock body widths from about 0.7 in to 1-7/8 in. Shackle diameters range from roughly 1/4 in (6 mm) to 9/32 in (7 mm), with shackle lengths about 3/4 in (19 mm) to 7/8 in (22 mm). Small luggage locks are listed at about 0.7 × 1.2 × 0.25 in.
Some padlocks and chains list a lifetime or limited lifetime warranty in their product details. Manufacturer warranty contact information is sometimes included in product notes—check the specific listing or manufacturer page for exact terms and how to contact support.
Mechanisms shown include pin-tumbler cylinders for keyed padlocks, warded key mechanisms used in some small luggage locks, and preset three-digit combination dials for keyless luggage/padlocks.
Child-safety locks use adhesive-mounted installations, pressure-mounted (tool-free) straps, non-adhesive strap systems, and some magnetic systems that unlock with a separate magnetic key.