1. Stable calibration, various specifications and wide application 2. Simple structure, easy to use 3. Exquisite workmanship, durable 4. Anti-slip design, lock firmly 5. Plastic material, no damage to the device 6. Specifications: 3-piece set 7. Scope of application: car maintenance 8. Material: PVC 9. Size: about 13.4x6cm 10. Net weight: about 135g