Ball screw:A:Rolled & grounded B:The grade is C5-C10 C:Serise:SFU.DFU,SFT,SFK D:Outstanding durability E:High-precision Ball screw,our company can supply the different size ,and we can process as your requirement. Detailed technical parameter as follow:DFUReference dataTYPEdlDaDABLWXGHQnCaCoaKDFU1605-41653.175284810100385.54440M64780179036DFU2005-42053.175365810101476.65144M641130238052DFU2505- ...