Linear shaft axis of stainless steel 500mm * 8mm. 1. Widely used for 3D digital coordinate measuring devices, such as precision equipment or special machine industry 2. Suitable for types of electronic equipment / guide rails, drive shafts and abutments 3. Smooth movement , low coefficient of friction, high rigidity and long service life. 4. They have good abrasion resistance, it is not easy to rust, high precision and good resistance.