shaft,motor shaft, gear shaft, worm shaft Size:L 0.5~400mm O.D ... is welcome Finish & Heat treatment High quality steel shaft, metal shaft, motor shaft, gear shaft, worm shaft, OEM is welcome. Basic process ... L ± 0.01mmRa : 0.8mmI.D. 0.25mm Steel shaftt, metal shaft, gear shaft, worm shaft, OEM is welcome.