Reinforced for strength. Will not rust. Fully shielded hardened steel shackle for cut and pry resistance. Corrosion resistant parts. Fully shielded hardened steel shackle offers extra cut and pry resistance. Weather Tough sliding keyway cover keeps dirt and grime from jamming lock. Scratch proof and durable ABS plastic bumper. Key retaining feature ensures padlock is not left unlocked. 185XD has 1-5/16 in wide case, 9/32 in diameter shackle, and 5/8 in horizontal shackle clearance. 187XD has 2-7/16 in wide case,5/16 in diameter shackle, and 3/4 in horizontal shackle clearance. Black finish.