1. Easily press up and down the main link plate of the clip-on chain without damaging the main link. 2. Make removing and installing clip style master links a breeze. 3. Wear and corrosion resistance, oxidation resistance. Hardened steel pins do not damage master links. 4. Maximum master link width 24.8 mm. 5. Presses on side plates with roller pins up to 5.25 mm (0.207 inch) diameter.