I have a pair of 10 tooth drivers, a set of 4 nine-tooth drivers and 1 eight-tooth extro driver. The nine and ten tooth driver fit 1 1\16" - 1 1/8" shaft and the eight tooth is for a 1" shaft. Also have a set of 19/43 gears with chain for sale. Would like to get $50 for extro, taking offers on the rest. send PM