- Adapts HEX J-Type 135/142 and Gravel Rear Hubs to 12x142mm.
- Adapts HEX J-Type R150/157 Rear Hubs to 12x157mm.
- Also compatible as replacement adapters for HEX J-Type and Straightpull Boost R148 Rear Hubs.

Compatible with:
- HEX J-Type 135/142, 150/157, and Boost 148 Rear Wheels
- HEX Straightpull Boost 148 Rear Wheels
- HEX J-Type Gravel Rear Wheels
- XD and HG Freehub Bodies

Not compatible with:
- SPIKE/OOZY/SPOON hubs