Sesamee K646 4 Dial Bottom Resettable Combination Brass Padlock with 1-Inch Shackle and 10,000 Potential Combinations Shackle clearance of 1 inch and 7/16 inch Chrome Plated molybdenum shackle Shackle pull strength is 2,750 pounds Best used for job boxes, gang boxes, utility meters, substations, cable boxes, tool chests, boxes, cribs, and lockers 2-1/2 inch body Width Industrial strength combination lock that resists the strongest hammer and pry bar attacks Solid Brass Body Solid Brass Internal Mechanisms Set your own combination 10,000 potential personalized options Full Metal Jacket Large Diameter Schackle