Features :Super-fine dia with better sliding ,abrating-resistant and better roudness are ailable. Sizes:Outside diaΦ 0.8~1.0. Material:SUS301\SUS304 \SUS420J2 Coating resin :Fluoro resin coating of CHIYOS No,TS-f1 Use :Optical pick-up ,Camera lens zoom axis . Custom-made products.