magnesium bicycle wheel 1.Patent & SGS & EU approved 2.The sole & biggest manufacturer of the Wheels 3.Lightest magnesium bicycle wheel 1. Specification ModelYM-CW26StructureCassette Sprokets and Disk Brake(F/R CNC)Size26'*1.75~26'*2.125MaterialMagnesium AlloyAssemblyBearingAlexF: M9*100*108 W/Q.R, R: M10*135*145 8-9SGross WeightF/1580g, R/1650gColorPowder Spraying: White, Black, Red, Bule, ...