Shimano's 12-speed cassettes with a 9-tooth lockring require a tool unlike anything else on the bench. That's where our XTR 9T Cassette Lockring Socket comes in. Designed specifically for the unique profile of Shimano's 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 repeated use, this socket is a shop staple that delivers consistency ride after ride. When precision matters, this is the tool to reach for.Custom fit for Shimano XTR 12-speed 9T lockringsPrevents rounding or damage by locking in cleanly and securelyMade from durable aluminum for professional longevityA must-have addition to any mechanic s toolkitWorks with a 3/8" drive for easy use with common shop toolsUse with a standard box-end wrench for leverage (not included) Wheels Manufacturing Shimano 9T Cassette Lockring Socket Freehub & Cog Tool UPC: 810124714055