Feature: 1. SMOOTH AND DURABLE: Linear rail block is easy to disassemble and install, easy to interchange, smooth and durable, surface oxidation rustproof treatment, bring stable and reliable operation 2. STRONG MATERIAL: Linear rail slider adopt thickened bearing steel, not easy to damage, durable, accurate engraving technology bring clear display, strong rigidity, long life 3. STABLE STRUCTURE: Linear guide slider adopts four point contact design, can withstand the load from all directions, push and pull smoothly, stable guide 4. FINE PROCESSING: Linear rail block is produced by large scale accurate equipment. The twill on the guide rail and the datum of the guide rail reach an angle of nearly 80° 5. LOW NOISE AND WEAR RESISTANCE: Linear rail slider adopts G10Z4 accurate high hardness steel ball, which has many columns, no lag, has small friction, low noise, low resistance 6. ACCURATE AND NON SLIP: Linear guide slider has automatic aligning ability, high positioning accuracy, not easy to slip deviation, can reach μm accuracy Specification: Item Type: Linear Rail Block Material: Bearing steel Model Number: HGH15CA Guide Rail Fixed Thread Model(mm): M4x16 Slider Fixing Mode: Lock type Use: Used for linear motion of guide rail. Package List: 1 x Linear Rail Block Note: The model of the slide block and guide rail must be the same; otherwise, they cannot be used together.