The Faithfull PVC Coated Brass Padlock has a brass body with a weatherproof PVC coating. The shackle is made from hardened steel. The padlock has an 8 disc tumbler lock mechanism and is double locking. This padlock is key retaining, meaning the key can only be removed when in the locked position. Supplied complete with 3 keys. More than 10,000 key differs. Specifications:Size: 50mm.Internal Width: 21.5mm.Internal Height: 21.5mm.Shackle Diameter: 8.8mm.Security Level: 7.