1. High-precision and high-toughness ball guide rails 2. It occupies a small space but has a large gripping force. 3. High repeatability 4. Can be used as double-acting or single-acting air claw 5. Single-acting type or with gripping force retention function, normally open (NO) or normally closed (NC) 6. Suitable for external and internal crawling 7. Various fixing and installation methods 8. Achieve sustainable production by reducing the use of materials