Indoor combination lock is best used as a school locker lock and gym lock, providing protection and security from theft.Note: Measure your door's backset, cross bore and thickness to ensure you find the right fit. Preset three digit combination lock for keyless convenience; Same combination opens both locks Combo lock is constructed with a metal body, anodized aluminum cover, hardened steel shackle, and anti-shim locking mechanism for strength and security; Made in the USA 1-7/8 inch (48 millimeter) wide lock body; 9/32 inch (7 millimeter) diameter shackle with 3/4 inch (19 millimeter) length, 13/16 inch (21 millimeter) width Pack of two combination-alike padlocks available in blue, red, and purple (color randomly selected at time of shipment)