Restricted Bolt Thrower (Curtain)
Restricted Bolt Thrower (Curtain) to suit Chubb / Union 3G114E & 3K74E RKS Systems

This internal lock part is used in Chubb mortice locks to restrict the copy of Standard Chubb keys.
RKS is a high security lock that uses a Restricted Key-Duplication System.
This unique system provides a very high level of security protection.