Drilling rails is easy and quick and saves you money...especially when you are using the right tools. One of ProSolar's essential tools that we would recommend to any installer is a standard Unibit step drill bit. We've been using them since the dawn of ProSolar (i.e. over 20 years) and they've continued to impress us with their low cost efficiency. The newest Unibit technology is no exception. Check out our latest video (in 3x speed) to see the #10 in action. Take note of the temperature reading at the end- minimal heat up that keeps your aluminum rail and your crew members safe.