something looked promising, after half a day of use I found my projects were burning badly, the blades were becoming dull, I've never seen my projects burn with a new beater or even a very old one Second hand. I buy yonico here and other brands and they last quite a long time, from a few weeks to 3 months. This bit took half a day and cut out 3/4 of the maple and 1/2 of the birch ply. It's not good for me, but 2 stars for people who need it for a one-time use on a project.