Pilot mills are designed for milling casing, liner, rotary shoe or large ID tubing. The cutting blades dressed with high class tungsten carbide material make PetroZHR pilot mill achieve fast penetration with minimal wear. The small and curled cutting debris is easy to remove. The pilot end is used to stabilize in the ID of the object that is being milled, ensuring concentric cutting and maintaining proper alignment throughout the milling operation. Contact our technical team for detailed specifications. Custom sizes and configurations are available upon request.