Wheels Manufacturing SOLO-SPLINE Micro Spline Single Speed Conversion Kit - 18t For Shimano Micro Spline Hub Bodies Red MFPN=BAD2606 8mm diameter for their control

8mm diameter for their control clamping area

It darkens and lightens up automatically to the strength of the sunlight (UV light)

Narrow platform design has chromoly rails for extra strength while still being very light weight

3/8" drive interface

Wheels Manufacturing SOLO-SPLINE Micro Spline Single Speed Conversion Kit - 18t For Shimano Micro Spline Hub Bodies Red MFPN=BAD2606 8mm diameter for their controlDesigned to seamlessly transform your Shimano Micro Spline hubs into a powerful Singlespeed setup SOLO SPLINE features a clever design that utilizes a base sleeve, which easily slides onto the Micro Spline freehub body, mimicking the process of installing a cassette. Once the base sleeve is in place, you can effortlessly slide the spacers and cog over it, securing everything with a reliable lock ring 7075 aluminum carrier and cogs for durability