Complete chain tool for most 520, 525, and 530 standard and O-ring chains Break, press and rivet your chain with one compact tool Will rivet hollow nose master links (will not rivet solid soft-nose pins) Will push pin completely through link/side plate Hardened body, riveting tip and breaker pin for strength and durability Removable handle for compact storage Perfect for trail/road tool pack if you have a chain with a rivet master link