1-7/8in (48mm) General Security Combination Padlock with Key Control Feature Product Features Overview Patented BlockGuard® Anti-Shim Technology withstands attempts to violate the latch mechanism Includes combination chart to facilitate lock system administration Key control feature provides supervisory access; specify key to match existing system or factory assigned 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, locks sold in groups of combinations, back case printing, and Simple Combo combinations - see Catalog for details Best Used For: Indoors Cabinets School, Employee & Health Club Self-Storage Units & Lockers Product Number:1525 Description:Control Key, Commercial Boxed Packaging Master Carton Qty:25 Body Width:1-7/8 in (48 mm) Shackle Length:3/4 in (19 mm) Shackle Width:13/16 in (21 mm) Shackle Diameter:9/32 in (7 mm) Color:Black The Master Lock No. 1525 3-digit combination padlock includes key control feature for supervisory access along with many enhanced security features like the exclusive BlockGuard® Anti-Shim technology, hardened steel shackles and double-reinforced stainless steel casing. Designed to fit lockers with a padlock eye of at least 5/16in (8mm) diameter, these locks provide multiple customization options to fit your needs. Customization Options Back Case Printing Bumpers Colored Dials Combination & Keying Options Custom Logo or Text Shackle Options