Fits : Shimano or SRAM HG freehub. You will need appropriate tools to remove and refit the cassette, such as a chain whip, cassette lockring tool, and a large wrench. Place the spacer onto the freehub first, followed by the cassette.
1.0mm Cassette Freehub spacer, for Shimano HG Freehub
2.5mm Cassette Freehub spacer, for Shimano SRAM
2.5mm Cassette Freehub spacer, for Shimano SRAM, 8/9/10 speed on 11 speed hub
1.85mm Cassette Freehub spacer, for Shimano SRAM, 8/9/10 speed on 11 speed hub
1.0mm Cassette Freehub spacer, for Shimano SRAM
Briny River 2PCS 2mm Freehub Spacer Black Compatible with10 Speed Cassette Compatible with 11 Speed Freehub Bicycle