The lockring with internal tool slot for securing Center Lock brake discs to hubs with 12 mm thru-axles or 9 and 10 mm quick-release mounts. Thanks to its 4 mm height, the lockring fits perfectly between all road, gravel and MTB frames and forks.

For 20 mm and 15 mm thru-axle mounting on Centre Lock hubs, an External Spline lockring with a larger inner diameter is required.

Internal Spline Lockring – internal tool mount: 23 mm inner diameter with 12-tooth spline; compatible tools e.g. Shimano TLLR15, Pedro’s 6460000. Corresponds to the tool used for cassette installation

External spline lockring – external tool engagement: 44 mm outer diameter with 16-tooth spline. Compatible tools e.g. Shimano TL-FC36, TL-FC32 or TL-FC33. Corresponds to the tool for