... C2 C3 precision 3:Milled type 4:ISO9001 passed Ball screw 1.Rolled and grounded . 2. Grade C5-C10 ... .high quality and low price . 4. Short delivery . Ball lead screw : 1.Rolled and grounded . 2. Grade C5-C10. ... We can modify the dimension and do some special screw end machine working acorrding our customer's requestSFE ,DFU ... DFS,DFV,SFI,SFK ,SFU Series and special ball screws Ball Screw cnc ball screw