Review on Highly Durable Direct Stainless by Brian Potter

I needed to fit a roof rack to my truck which required drilling 12 holes in the roof. When I started I found that I had to drill through 2 layers to get the appropriate depth, not just one. But this drill went through the second layer just as easily as the first. I have 12 very clean holes. They were the perfect size as the inserts I used fit nice and snug. If you need to drill into a GM truck roof rack, this is the drill bit for the Rivnut inserts. My roof rack is holding up really well because this drill bit made the right holes for it.