Sram x0 2x10sp high direct front mech wide range 2x10 system with x glide front shifting technology features speeds10 speed for 2x10 system weight130 grams compatibility10 speed only 36 tooth mount options high direct mount pull dual pull technology x glide shifting technology 42t this front derailleur will work with standard 39 26t and 42 28t ratio chainsets to adjust for 39t or 42t outer chainrings the user simply needs to slide the derailleur up or down on its mount 38t this fr