These Faithfull Padlocks have a brass body and steel shackle. They have a self-locking action. These Faithfull brass bodied padlocks provide an excellent level of security. Each lock features a high strength, brass cylinder mechanism that is accurately machined, durable and rust resistant. They have stainless shackle springs and a steel shackle. All locks above 30mm in body size have hardened anti-cut and saw resistant shackle with double locking tongues for improved security. Each pack is supplied with 3 keys.The FAIPLB30 Brass Padlock combines a quality brass 4-pin tumbler mechanism and a hardened, cut and saw resistant shackle, along with a self-locking action to provide a high level of security. It is extremely resilient to all types of weather and suitable for outside applications. The padlock has the following specifications: Overall Width: 30mm.Internal Shackle (WxH): 15.0 x 16.1mm.Shackle Diameter: 5.0mm.Security Level: 4/9.