Shutter padlockThe steel armors reinforce the brass body, protecting it from possible burglary tools attacks and making the padlock particularly suitable for closing dampers and use with chains. Body: forged brass block. Primary armor: 3 mm steel, cemented, hardened, coppered, nickeled and chromed. Side armor: 1.5 mm steel, hardened, tempered, coppered, nickeled, and chromed. Auction closing: rotary cut-resistant in hardened, tempered, coppered, nickeled and chromed steel. Barrel: 5 pins with protection against tear and with anti-drill plate in hardened, tempered, coppered, nickeled and chromed steel. Keys: nickel-plated brass, supplied in 3 pieces. Mechanism: type locking, key removable in both open and blocked padlock, brass pins, steel hardened, tempered, coppered and nickel plated latch, spring-piston phosphorus bronze, stainless steel spring latch.