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 FAIPLB40KA pack contains 2 x 40mm padlocks which are keyed alike. The padlocks combine a quality brass 5-pin tumbler mechanism and a hardened, cut and saw resistant shackles, along with a self-locking action to provide a high level of security. They are extremely resilient to all types of weather and suitable for outside applications. The padlocks have the following specifications Overall Width 40mm. Internal Shackle (WxH) 20.7 x 21.8mm. Shackle Diameter 6.3mm. Security Level 6/9.