PB Swiss. You can buy them in the US from Tool Lady. They are expensive, but worth it if you use them all day every day. I've had a set of bits for 15 years, the slotted (common) bits show no signs of wear. They also make great posidriv bits. Disclaimer: I do not work for said company, I was just giving an example.
PB Swiss. You can buy them in the US from Tool Lady. They are expensive, but worth it if you use them all day every day. I've had a set of bits for 15 years, the slotted (common) bits show no signs of wear. They also make great posidriv bits. Disclaimer: I do not work for said company, I was just giving an example.