After I put it to the test i can confidently say that this chain breaker tool should be a part OF every automotive hobbyist`s toolbox. The precision and ease with which it broke my bike's chain was impressive .It can fit chains up to size 520 and has multiple locating pins for added versatility. The only downside is the price, but the quality makes it worth the investment. It's a reliable tool that will save me time and frustration in the future..