>>> DON'T LOSE MONEY <<< I have purchased other Accusize tools with great success, with the overall quality and performance of some carbide rotary boring tools. However, the main problem with this tool was that the hole that the cutter enters was not concentric with the shaft as it measured a total of .026" after the cutter was tightened with set screws. I don't have any previous reviews. Didn't even bother to see if the set screws were worse. Sorry if you are reading this please work on this issue.