Dear Sir / Madam,We are regularlly used ball screw & nut in machine which was manufacturer by us. So, herewith we are providing you our statndard drawings for same. So, please workout & submit us best rates on most priority basis. we need morethen 80 sets from attahced drawings. (we are found only six drawing can attaching here. So, please provide your direct mail id for more drawing & discussing.)Waiting for your prompt response....Thanking You, Show More