Master Lock 510D Lock with Adjustable Shackle, 1-3/4-inch 1-3/4" wide laminated steel case Warded locking mechanism Patented crowned locking lever Shackle length adjusts from 5/8-inch to 2-inch Warded locking mechanism minimizes jamming from dirt and grime adjustable shackle ensures snug fit to the locked item removable adjustable shackles provide maximum application flexibility 1-3/4-inch wide laminated steel lock with standard steel adjustable shackle