Shimano 9T Cassette Lockring SocketWheels Manufacturing XTR 9T Style Cassette Lockring Socket Shimanos 12 speed cassettes with a 9 tooth lockring require a tool unlike anything else on the bench. Thats where our XTR 9T Cassette Lockring Socket comes in. Designed specifically for the unique profile of Shimanos 9T lockring, it delivers the accuracy and security needed for proper installation without slips or damaged parts. Built from heavy duty 6061 aluminum and engineered to hold up to