This is a brand new Amtech Self Locking Hasp & Staple. It features a chrome finish and simply twists to lock. It unlocks with a key, twists 90 degrees, and then the hinged plate can be lifted over the lock. Two keys and fixing screws are supplied. The length is 100mm/4". It is suitable for low-level security applications such as display cabinets and storage units. The hasp width is 40mm and it is not suitable for outdoor use. It has a durable zinc alloy and steel construction.