... . A great product that spins an edge on the old padlock systems which can be used for a multitude of equipment ... , toolboxes, gas cylinders, diesel tanks etc.1) This alarm small padlock is widely used for home, door, window, case, box. combined ... weather, Resistant physical destory, Waterproof; 7) Hot processed hardened steel shackle (anti cut & saw), Shackle diameter: 8mm; Security Padlock Alarm