The FH-M7110 is a rear FREEHUB for a disc break from Shimano’s SLX range. It is easy to install with the spline mount & lock ring. The FH-M7100 has a 12 mm E-THRU axel. In turn the FH-M7110 increase acceleration increasing riding excitement, enjoyment & performance. The measurements are 142MM X 12mm & are available in 28H, 32H.