Hammaspyörä Sturmey-Archer 1/8" flat 1-speed

Rear hub sprocketTeeth (Optional): 18T OR 17T OR 16T OR 15T OR 14T OR 13TFits chain size: 1/2 x 1/8"Flat3 notchCan be used with single speed or with internal gear systemPlease make sure your chain is correct size (1/2 x 1/8")