their normal looking carbide tipped twist bits. I bought a set at the show last and returned them the next day with 2 broken bits. According to the guys selling the bits they are not intended for mild steel and mild steel will break them. Hummmmmmm. Either way they are made in China and probably the worst quality I have ever seen coming out of China.
Truly one of the best brands for woodworking bits is Colt. I have several of their brad point bits, specifically "5 STAR Brad points Bits", not their less expensive ones. Colt also makes Forstner style bits. With a Colt 5 Star 3/8" bit I can drill through a piece of oak or oak plywood with no support on the back side and get no tear out as the bit exits the back side of the wood.