Hardened solid steel chrome and duplex nickel plated body with a hardened steel changeable shackle and a double locking mechanism. Fitted with a hardened steel cover plate and an anti pick 6 pin brass cylinder. For indoor and outdoor use on medium to maximum security items. Key change every 20 000. What's in the box 1 X Matlock 50X25Mm Shackle Solid Steel Padlock