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 inch diameter, 3/4 inch horizontal clearance boron shackle 1-1/8 inch shackle height