Feature: 1. EASY TO INSTALL: The linear rail slider is easy to disassemble and install, convenient to exchange, with surface oxidation and rust prevention treatment, stable and reliable in operation. 2. THICKENED MATERIAL: The linear guide rail slider is made of thickened bearing steel, which is not easily damaged, sturdy and stable, with strong rigidity and long service life. 3. 4 POINT CONTACT: The carriage block adopts 4 point contact design, which can withstand loads from all directions for smoothly pushing and pulling, and stable guidance. 4. HARD STEEL BALLS: The linear block adopts G10Z4 precise high hardness steel balls, with multiple rows that do not get stuck, low friction, low noise and low resistance. 5. AUTO CENTERING: The carriage slider has automatic centering ability, high positioning accuracy, and is not prone to slipping deviation, can achieve μm accuracy. Specification: Item Type: Carriage Block Material: Bearing Steel Model: HGH20CA Slide Rail Fixed Thread Model (mm): M5x16 Slider Fixing Method: Locked Type Use: For Guide Rail Linear Motion. Package List: 1 x Carriage Block1 x Accessory Note: The model of the slider and guide rail must be consistent, otherwise they cannot be combined for use.