Center Lock Locking Rings: Inside and Outside Serrations

It provides even pressure across the disc rotor so it's less likely to warp due to uneven torque and it's simply faster and easier to install and remove. The XT M8010 Centerlock Rotor Lockring is perfect to keep in the toolbox just in case you might need it on a trip. The lockring is compatible with 12 15 and 20mm axles and Centerlock rotors and requires an external BB tool to torque the lockring to the hub.

Shimano XT M8010 Centerlock Disc Rotor Lockring

Almost no clearance between centerlock lock ring and fork - is there something wrong here? : r/bikewrench

Stainless Steel Serrated Lock Washers, Grade: SS304, Dimension/Size: 3 Mm To. 20 Mm at Rs 0.50/piece in Mumbai

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Sporthfish Centerlock Lockring for 12/15/20mm Thru Axles and QR Bicycle Center Lock Cover Ring Bike Center Shaft Disc Brake Rotor Centerlock Aluminum : Sports & Outdoors