This great little tool is designed to press on the side plates for all 520 to 530 chains with press fit connecting links. It is meant to be used on O-Ring and other types of chain with no problem. If you also want to make it into a chain breaker then order the "Chain Breaker Converson Kit" along with the Chain press.
Press-fit side plates on all 520-530 chain
Works on O-ring chain
Designed to install press-fit connecting links
Chain Breaker Converson Kit:
Converts 15-8066 press tool kit into a chainbreaker and riveting tool for 520, 525 and 530 chains
For riveting hollow nose master links only