ITEM NAME:Cassette Lockring Remover Tool Bicycle Black With Needle For Shimano Sram S D8B3 Cassette Lockring Remover Tool Bicycle Black With Needle For Shimano Sram S D8B3 Recommended Use: bike maintenance Manufacturer Warranty: limited lifetime Removing a cassette is near impossible without a proper lockring tool, which is why hooks it up with the FR-5. 2 Cassette Lock Ring Tool. Designed to make your life a little easier, this lockring tool uses a one-inch base perfect for fitting on wrenches or bench vices, and makes it easy to remove cassettes without the removal of cones and locknuts. It has a 12-spline design, and works on Shimano, SRAM, SunRace, Chris King, and other cassette lockrings, along with some Shimano disc brake lockrings. Cylindrical diameter: 4mm Square diameter: 8.5mm 11 tooth diameter: 24mm Nut outer diameter: 23.5mm colour:black Material:steel Package Contents: 1 * Lockring Tool.Removing a cassette is near impossible without a proper lockring tool, which is why hooks it up with the FR-5. 2 Cassette Lock Ring Tool. 1 Lockring Tool.