SHIMANO Cassette Lock Ring for Deore XT CS-M8100 | SLX CS-M7100 | Deo, 9,95 €
Amazon.com : IceToolz Cassette Lockring Removal Tool with Guiding Pin for Stability - Compatible with Shimano, Suntour, Sunrace, Chris King, and Sram Cassettes : Bike Hand Tools : Sports & Outdoors
Shimano deore XT lock ring? | Mountain Bike Reviews Forum