... 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 ... 6061,6063,etc(2),Ability for the surface finish: ElectroplateZinc plated(while,colour,dacroment),Nickel plated,copper ... ,etc Polishing Grinding and polishing,etc,except mirror finish (3),Ability for the tolerance Roundess0.002mmCylindricity0.003mmRoughnessRa0 ...