Laser welded stainless steel lock body Hardened steel chrome plated closed shackle Anti-drill plate on cylinder (70mm and 90mm) Stainless steel interior (90mm) Deadbolt locking lever (1) Brass cylinder Anti-pick mushroom pins Nickel plated brass keys Large number of key combinations Standard section keyway Key retained in unlocked position All padlocks within a single multi-pack operate on the same key, however the keys differ from pack to pack