... shaft,motor shaft, gear shaft, worm shaft Size:L 0.5~400mm O.D 0.5~80mm OEM is welcome Finish & Heat treatment High quality steel shaft, shaft, motor shaft ... , gear shaft, worm shaft, OEM is welcome. Basic process:1.the shafts ... 0.01mmRa : 0.8mmI.D. 0.25mm Steel shaftt, motor shaft, gear shaft, worm shaft, OEM is welcome.