Booster thru-axle hub spacer kits are designed to give your non-Boost front and rear thru-axle hubs the boost they need to fit any Boost-compatible frame or fork.Kit includes center lock adaptor, allowing riders to use 6-bolt rotors on Shimano Center Lock compatible hubs10mm spacer kit adapts 100 x 15mm front hub to 110 x 15mmIncludes 10mm adapter to 6-bolt rotorsIncludes external spline lock ring for thru-axle compatibilityIncludes two 5mm axle spacersThru-axle not included Problem Solvers Booster Hub Spacing Kit - Front Front Axle Conversion Kit UPC: 708752352179