General description Reliable M22 Threaded Extension Rod Adapter designed for efficient drilling with electric drills. Its M22 threaded interface ensures standard threading and uniform force, providing a safe drilling experience. The extension bar is made of 45# forged steel, ensuring durability and suitability for demanding applications. Technical specifications Material: 45# forged steel Thread type: M22 threaded interface Design: Thick and elongated structure Usage Compatible with most general-purpose M22 filament water drills Ideal for various drilling tasks Other information External sandblasting treatment for waterproof, rust-proof, and wear-resistant properties Seamless connection to resist deformation and eliminate shaking during use High hardness construction for a long service life