This chain tool will allow easy removal of a worn chain and precise assembly of a new chain with rivet-style link. No need to remove the swing arm when replacing the drive chain. The tool works with all 520, 525 and 530-series and 630-series chains from multiple brands, including our Tsubaki and Pingel chains. For 420, 425 and 428-series full rivet chains you will need the separately available chain tool extension set. The Kellermann chain tool works with a 3/4" (19mm) ring- or socket wrench.