Pad lock * Rectangular shape * Virtually indestructible with hardened chrome plated solid steel bodies that resist cutting,, sawing and corrosion * Hardened boron alloy steel shackles that offer superior cut resistance * Five and six pin brass cylinders and dual ball bearing locking mechanisms resist picking,, pulling and prying * Ideal for security gates,, sheds,, truck and van doors,, industrial machinery and construction equipment * Solid Steel * 5 pin APTC12 cylinder * 5/16