FEATURE : ProSeries® resettable combination locks are designed for Commercial/Industrial applications Set-your-own 4-digit combination for convenience and security; 10,000 possible combinations - No reset tool required Large ergonomic dials with exclusive blind feature permit operation with gloves, in low light or complete darkness Deadlocking mechanism protects against prying, shimming and rap attacks Shackle seal and dial dust cover protect internal components and dials for trouble-free operation Best used for utility meters, substations, cable boxes, construction sites and equipment, industrial gates, storefront gates, and business gates, and in manufacturing environments. Shackle Length: 1 1/16" (28mm) Shackle Diameter: 3/8" (10mm) Shackle Inner Width: 15/16" (24mm) Body Width: 2 1/4" (57mm)