The ABUS 85 Series Brass Padlocks have a solid brass lock body and high-quality, rust-free inner components. Fitted with a hardened steel shackle with NANO PROTECT™ plating for extreme corrosion resistance and double bolted (30mm and above). The precision pin cylinder features anti-pick mushroom pins and a paracentric keyway for increased protection against manipulation. Automatic locking: the padlock can be locked without a key, just push down the shackle. Ideal for securing a wide range of objects. Sizes 20-40mm: for securing valuables/goods of medium value or at average risk of robbery. Sizes 50-70mm: for securing valuables/goods of greater value or at high risk of robbery. This ABUS 85/40HB40 Brass Padlock has the following specification: ABUS Security Level: 6. Shackle Width: 23mm.Shackle Height: 40mm.Shackle Diameter: 6mm. Overall Width: 40mm.Overall Height: 79mm.Overall Depth: 16mm.