... many kinds of different parts,such as spline shaft,worm shaft,gear shaft,hollow shaft,stainess steel shaft,trailer jack and coupler.total quantity could ... already got the ISO900 certficate and take guarantee for any shaft 1year.3:With many experiences to supply for big ... 42CrMo,etc.own steady relation with suppliers.9.Tolerance: 0.010-0.025mm, machining longest length:150mm,with more than 15 ...