The Cisa C3000 Large Oval Key & Turn cylinders offer the perfect balance between safety against attacks, protection against key duplication and fewer keys to manage accesses. A key can be used to operate it from one side and a thumbturn on the other. It has a Bump Key Power (BKP) device and a special spring thereby making it highly resistant to bumping and wax impression burglaries. The hardened steel 6 pin key bitting system ensure that the cylinder is drill resistant. The Cisa C3000 is supplied with 3 keys, fixing screws and a security card which can be used to control duplication of keys. The card should be presented in order to duplicate a key.