I was very excited about this bit set, especially the reversible glue joint bit. However, I have found this bit is not cut properly and the "tongue" it produces is too large for the "groove", making joining boards impossible. I am hopeful this is a fluke and the company can replace it with a bit that actually works. I will be able to test the customer service quality of the manufacturer that the previous reviewer says is so great. He sounds like he works for the company to me....