1. Perfectly balanced cutting design can realize smooth and efficient operation. 2. The aggressive three-tooth carbide cutting action can pass the most difficult conditions. 3. Quickly and easily replace the carbide tool teeth with straight knock-out holes. 4. The turning surface has a conical shape, which can react faster to directional pushing. 5. Run the drill pipe and rig smoothly with minimal vibration. 6. The dome carbide provides good wear resistance without the need to cut the top of the hole to achieve excellent steering. 7. Use built-in check valve to minimize the chance of blockage.