LOCK APPLICATION: For indoor use; lock is best used as a locker lock, storage lock or cabinet lock EASE OF USE: Fixed 3 digit combination lock for keyless convenience; Bright color simplifies locker identification DURABLE DESIGN: Padlock includes metal body with stainless steel cover, hardened steel shackle, and anti-shim locking mechanism for improved strength and security. DIMENSIONS: padlock (HxWxD) 5,7 x 4 x 2,5 cm ; shackle (AxBxC) 0,6 1,8 x 1,7 cm Patented BlockGuard Anti-Shim Technology withstands attempts to violate the latch mechanism Includes combination chart to facilitate lock system administration 1-7/8in (48mm) wide double-reinforced stainless steel body withstands abuse 3/4in (19mm) tall, hardened steel shackle for extra cut resistance Easy 3-number dialing with automatic scrambling feature to prevent reopening of lock Optional color dials, customized dials, and locks sold in groups of combinations - see Catalog for details For supervisory key control option, consider model 1533