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 55/30 Brass Padlock has the following specification: ABUS Security Level: 3.Keyed Alike Key Reference: 5301. Shackle Width: 15mm.Shackle Height: 13mm.Shackle Diameter: 5mm. Overall Width: 29mm.Overall Height: 44mm.Overall Depth: 12mm.Additional Information:• Padlock Type: Brass• Body Width (mm): 30• Shackle Diameter (mm): 5• Shackle Height (mm): 13• Shackle Width (mm): 15• Drill Protection: No