Description Laminated Steel Bodies And Hardened Boron Alloy Shackle For Strength And Cut Resistance. 4-Pin Cylinder Prevents Picking And Dual Locking Levers For Extra Pry Resistance. Proprietary Rustproofing For Longer Life. 2" Wide Case, 3/8" Diameter Shackle, And 15/16" Wide Horizontal Shackle Clearance.