I may have just received a bum set, but all six right and left hand tools (AR/BR/AL/BL) were completely useless. The carbide was ground with a negative front and side clearance angle, leaving the tool to just rub on the workpiece without cutting. There is some rake, maybe 4-5 degrees, but tilting the tools to give some clearance results in negative rake.The other three bits--the C-type chamfer bit and the 90 and 60 degree V bits, were ground OK.More of an annoyance than a show-stopper, but the paint on the shank also covered the cutting edges, and you have to chip it off with a fingernail before you can get started.