K2 DIAMOND provides a solution for a professional cutting contractor that solves their challenge of how to drill out 10-1/4" diameter holes in solid steel grates. A professional Arizona cutting contractor was faced with a challenge of installing metal posts into a steel grate. Each post required a hole in the middle of a steel grate to allow to allow installation. The contractor turned to K2 who developed a diamond bit, specially designed to smoothly drill the steel grate, wh