Abus 83KNK/45 padlock. 1 3/4" wide brass body with 5/16" special alloy steel shackle with Nano Protect coating for extra corrosion protection. 1" shackle clearance. Accepts most commercial lock knob and lever cylinders. Can be set up for key retaining or non key retaining with included Z bar. Easy change shackle design. Does not include lock cylinder or keys.