The abus 82 monoblock shutter padlocks have a solid brass body and a through hardened steel alloy shackle which rotates when attacked 5 pin precision cylinder with anti pick mushroom pins and rust free components a hardened steel pin protects the narrow side of the lock against sawing and can be locked without the key by pushing in the bolt nano protect chrome plating hardened steel and through hardened steel alloy shackles get the most effective protection available where smallest nano particl