dudley® High Security Lock with Master Key 
FEATURES:
3-digit easy to dial number combination lock with automatic scrambling feature to prevent reopening of lock
Key control feature achieves supervisory access: One key provides Supervisors immediate access to all locks matching the existing system or factory assigned
Comes with a metal shroud that protects the shackle from bolt cutters and prying
Includes combination chart to facilitate lock system administration
Patented BlockGuard® Anti-Shim Technology withstands attempts to violate the latch mechanism
Double-reinforced stainless steel body withstands abuse
Hardened steel shackle for extra cut resistance
BEST USED FOR:  Lockers, Equipment Storage, and Cabinets
Body Width 1-7/8"
Shackle Clearance 3/4"
Shackle Diameter 9/32"