Fisch FSH-134800 Drill/Countersink Set - 1/8-Inch/3mm, 5/32-Inch/4mm, 3/16-Inch/5mm, and 1/2-Inch/6mm

These are a good choice for woodworking. Quality bits and countersink boring adapters. Recommend.

I own quite a lot of fisch waffer frostner bits and their higher end drill bits. They are good quality. However, I don't recommend these counter sink bit. It's not there are any problems. But for the price, I don't see their performance any better than the big box store red, yellow, green brands and the price is 3 times higher. I built a set of cabinet with it and they don't cut as their higher end drill bits. It struggled through. I am returning it. You better off just buy the big box store brand and save some money for other expensive tools.