Straight groove drill has strong self-centering ability, using top grinding, can effectively ensure the concentricity of the workpiece; With good processing accuracy and surface finish requirements; Selection of high quality bar and combined with the different processing conditions of the surface coating treatment, in order to prolong the service life of the tool, enhance the durability of the forming tool. Strong applicability: used for gray cast iron, nodular cast iron, copper alloy, aluminum alloy and other materials processing. Straight groove drill has good chip control and chip removal performance when drilling most workpiece materials, which can ensure the drilling quality of the hole, and does not need to carry out subsequent finishing after drilling. The hole surface finish is good, dimensional accuracy and positioning accuracy are very high. Can be used in machining centers, CNC lathes or other high rigidity, high speed machine tool processing. Tungsten straight groove drill: suitable for processing gray cast iron and ductile cast iron.