1. Material: Fire resistant ABS+Stainless Steel
2. Cylinder: Zinc Alloy Housing, Brass Disc Flat Tumble-14 Blades
3. Operation: 1 Coin
4. If incorrect coin or fake coin, then will be returned to user and lock can not be used (drop to the money tray)
5. Coin Return Lock (Put articles in the locker cell, drop coin into then close the lock and take out the key, insert the key to open the cell after finishing use, coin is returned to user(coin drops into the money tray)