Diamond down the hole drill is a type of drill bit used in conjunction with a down the hole impactor, which is used to drill holes through splines and the impactor.Made from high-quality steel and hard alloy as raw materials, and subjected to special heat treatment processes, the ball toothed drill bit can withstand the requirements of excavating rock layers with strong hardness, and can minimize losses during energy transmission. The fixed tooth force is uniform and not easy to lose or detach teeth, so that the impact energy can be concentrated on the rock, achieving the goal of efficient excavation. Mainly used for geological exploration, coal mining, water conservancy and hydropower, highways, railways, bridges, construction, etc.