These Scan Stainless Steel Padlocks provide an excellent level of security with extended shoulders to surround the shackle. They also have improved corrosion and weather resistance making them ideal for outdoor applications. Each lock features a brass cylinder mechanism accurately machined making it durable and rust resistant. They have stainless shackle springs and a stainless steel shackle with a double self-locking action. Each padlock is supplied with 3 keys.