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 55/40HB63 Brass Padlock has the following specification: ABUS Security Level: 4.Keyed Alike Key Reference: 5401. Shackle Width: 21mm.Shackle Height: 63mm.Shackle Diameter: 6.5mm. Overall Width: 38mm.Overall Height: 102mm.Overall Depth: 13mm.Additional Information:• Padlock Type: Brass• Body Width (mm): 40• Shackle Diameter (mm): 6.5• Shackle Height (mm): 63• Shackle Width (mm): 20.5• Drill Protection: No