Kit includes a 12mm axle, washers, end caps with bolts and bolt action slider for use with classic series trainersFits 142mm and 148mm thru axles with 1.0 and 1.75 thread pitchAxle is threaded on both sides*Not compatible with the JetFluid Pro, Supermagneto Pro or PowerBeam Pro Thru axle adapter142/148mmUPC/EAN/GTIN: 012527018802