Breaks chains from #35 up to #630. Versatile enough for cam and drive chains. For 520 chains and up it is recommended to grind the rivet head. Includes 2; 3 and 4mm pins to fit most chains. This tool enables you to remove and install the press-fit side plates with ease. This kit will fit rivet and masterclip style sideplates and regular and O-ring chains. A hammer or other uncontrollable force is not needed. Note: For replacement parts see 547079 Extractor bolt; 547080 2mm pin; 547081 3mm pin; 547082 4mm pin; 547083 Rivet tip; 547102 Press plates