The ABUS 55 Series Brass Padlocks have inner components made from non-corrosive materials. Pin tumbler cylinder with anti-pick mushroom pins which resists picking, a hardened steel shackle which resists hacksaw attacks and double bolted 30mm and above for increased shackle strength. Long shackle (HB) version available.This ABUS 55/50 Brass Padlock has the following specification: ABUS Security Level: 5. Shackle Width: 25mm.Shackle Height: 24mm.Shackle Diameter: 7mm. Overall Width: 48mm.Overall Height: 68mm.Overall Depth: 14mm.