The Master Lock Solid Brass Padlocks are a tough and reliable security solution, with a modern design. It is ultra convenient with a removable and adjustable shackle (70mm-155mm) for more application possibilities. Supplied with 2 keys and a Lifetime Warranty against mechanical failure. Suggested uses: sheds, (oil) tanks and gates. Specification Size: 50mm.Shackle Length: 70-155mm Adjustable.Shackle Diameter: 7mm.