coin free of charge lock

1.Lock is installed inside the locker,it has a small collecting box under the lock. 2.14-pins cylinders is designed for security and provided 5 million combinations with undulicated system. This means is very hard to copy the keys. 3.It has choosen coins functions and prevented fake coins. 4.It has adopted national patent technology, we can make it non-defect, free of coin jamming and sliding. 5.You can insert one to three coins at one time. 6.It has master key control system, if the user loses the key or in the emergency situation, you can use the master key to open the lock, also you can use it to change key cylinder. 7. OEM:any metal coin is available,like Euro, Peso ,USD,etc. 8.The lock is used in wooden locker, plastic locker and steel locker.