I bought the chain breaker, and followed all the instructions perfectly. Only problem I had was with riveting my new chain link. The large anvil was made with a groove so the link would stay in place , but if too much pressure is applied in the middle, it will snap and leave you unhappy. I substituted a press plate for the broken anvil and it worked. Everything else in the tool kit did what it was intended to do. Do not put a lot of pressure on the anvil or any other part, and you'll be fine.