1,WIDE RANGE OF APPLICATIONS: Linear optical axes with rod guide, digital coordinate measuring equipment bracket is widely used in digital 3D coordinate measuring equipment such as accurate equipment or special machinery industry 2,SCREW GUIDES: Screws are widely used in machine tools such as 3D printing, and optical shafts are suitable for various electronic equipment, guide rods, transmission shafts, pillars 3,GOOD BEARING SEAT: The bearing seat has a certain bearing capacity, can be installed on the ordinary accuracy rack, and has strong adaptability 4,GOOD QUALITY ALUMINUM MATERIAL: Made of good quality aluminum, has good wear resistance, not easy to rust, high accuracy and good strength 5,PRACTICAL 3D PRINTER PARTS: The kit includes optical shafts and leadscrews, housing bearings, linear guide brackets, CNC stepper couplers and ball bearings