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 valuablesgoods of medium value or at average risk of theft Sizes 50-70mm for securing valuablesgoods of greater value or at high risk of theft