NOTE: Before purchasing you must compare the measurements from your current front roller to the measurements listed for this front roller. Axle length 22.875", Axle OD .669", Barrel length 20.375", Barrel OD 1.81", Threaded holes on non-pulley end 8-1.25mm, No threaded hole on pulley end, Distance from center of threaded hole to end of axle .55", Pulley OD 3.25", 9 Pulley grooves, Pulley width .91", Pulley is flush with barrel, one magnet on outside of pulley.