Review on Amana Tool 53204 Slotting Cutter by Dee Parson

Allegedly 5/16 hole. That's 1/32 less. You may need to round the file. Not something I wanted to do but had no choice in doing in time. I was able to do what I needed, but I will not buy another Amana tool. The chisel burned out, cutting a total of 12 feet of part board. Don't try to use them with hardwood