Ball screw and nut 1.Tolerance level:ABEC-1-3-5 2.Vibration noisy leverZ1,Z2 3.High quality long life 4.First order discount 3202 SBC Linear Ball screw and nutPacking&DeliverPacking Detail:Standard export carton or as custormer needsDeliver Detail:Prompt delivery time Retainer:copper cage,nylon retainer,steel retainer,bakelite retainer, etcMaterial:chrome steel,stainless steel,bearing steel ...