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