1、Professional Kit: This kit comes with optical axes, lead screw, lead screw nut, sliding block, vertical sliding block, flexible coupling, pillow block bearing to you for usage 2、Good Bearing Capacity: The pillow block bearing has a certain bearing capacity and can be installed on ordinary precise racks, has strong adaptability 3、Strong Adaptability: The optical axes is suitable for guide rods, transmission shafts and pillars of various electronic equipment, and the screw rod can be widely used in machine tools such as 3D printing 4、Wear and Rust Resistant: The screw, guide shaft support and sliding block are made of high quality aluminum, with good wear resistance, not easy to rust, high precise and good strength 5、Application: This kit is widely used in digital 3D coordinate measuring equipment such as precise equipment or special machinery industry