Halco Directional Drilling Products’ Storm 500 is a rock drilling system engineered to steer through the hardest rock formations. It is designed for high production rates, low maintenance costs and easy operation. Its steering rates are similar to conventional directional drilling, and with a choice of drill bit designs, the Storm 500 will drill all types of rock, including small distances of loose material. It offers a bit diameter of 51⁄4 inches and a hole-opening option of 63⁄4 inches. Halco Directional Drilling Products