Sram x0 2x10sp low direct front mechwide range 2x10 systems with x glide front shifting technologyfeaturesspeeds10 speed for 2x10 systemweight 130 gramscompatibility 10 speed onlymount options low direct mount s1 s3pull top or bottomtechnology x glide shifting technologyspec 1 42 7mm gap between the centres of the 2 mounting holesspec 3 22 1mm gap between the centres of the 2 mounting holes these 2x holes are also offset by aprox 5mm with the front one being set further out i e c