Weatherproof Antirust Padlockheavy duty disc padlock is made of 304 stainless steel, which is ultra waterproof and antirust. It provides maximum corrosion protection during outdoor or indoor use. Outdoor Indoor Usehigh security round padlock is a heavy-range security padlock, suitable for indoor and outdoor use such as cabinets, warehouse, storage unit, fence, garage, shed, gate, etc. 9.5mm Hardened Steel ShackleInner structure and shackle(9.5mm) with round shielded design minimizes shackle exposure, which will prevent bolt cutter attempts on breaking it. It designs for increased strength, security and cut resistance. High Security LockShielded shackle solid brass chrome plated high precision tumbler mechanism with 5-pin cylinder provides pick and pry resistance. Durable and sturdy structure minimizes shackle exposure and protects against bolt cutter attacks. WorkmanshipMeticulous quality inspection of workmanship, excellent safety performance and anti-theft effect, and pure copper lock core quenched lock beam is not afraid of rain