... years experience. 1,Name:Stainless steel handle with thread;Stainess steel handle;Handle with thread 2,For the similar handle,what can we do ?(1), Ability ... for the material of this kind of handle: Grade3.6,4.6,4.8,5 ... .6,6.8,8.8,9.8,10.9,12.9,etcCarbon ...