1.high quality ball screw 2.large amount of products in store ... in ball screw for years.We can supply full range of SFT, DFT,SFE,SFUand DFU series ball screws. ... We can offer the products with high performance, cost effective, and precision for all applications.Ball screw ... store3.offer the most reasonable price4.quick delivery5.TBI screw .nut is make our self.6.packing: wooden ...