The highly respected and widely used changeable combination Camatic system from Camlock is the GM8871/65MkIV which is designed for T-handle applications with limited space. It is facilitated with a Change Key as a backup in case of emergency like the loss or theft of the operating key(s) thus eliminating the necessity to replace the locks. To minimize the risk of access with unauthorized keys it also incorporates the key registration facility which is a specially developed version of the patented Octagon system. The customer can specify the required number of Operator and Change Keys to avoid the risk of surplus key production leading to misuse. It has a dye-cast alloy house, brass locking mechanism, sintered steel latch and a polished chrome finish. Although the bezel is numbered from 1 to 8 assisting reprogramming there is no indication.