Body: Solid Brass Armor: (armor) in cemented, hardened and galvanized steel. Protective cover: yellow or blue nylon (assorted colors) covering the armor The cover enhances the product and protects it from bumps and scratches. Locking rod: rotatable anti-cutting, Ø 9.5 mm., in hardened steel, hardened, copper-plated and nickel-plated; with head against tearing. Barrel: protected by plate against burglar and drill, made of hardened steel, hardened, copper-plated and nickel-plated. Keys: nickel-plated brass, coated with ergonomic non-slip nylon handle, Viro Top Security profile, 2 supplied. Mechanism: removable key only with closed lock; brass counter-pistons "mushroom" against the action of the lock pick; lock cover protection, against the aggression of atmospheric agents. Chain: semi-square (to counteract manual cutting machines that generally have sharp blades suitable for holding round profiles) in special steel (manganese) cemented, hardened, discovered and galvanized.