Make of high hardness carbon steel for sharply cutting edges that resist chipping and last longer on various pipe materials Works directly with power drills for fast rotation threading, replacing manual labor and enabling efficient continuous operations Comes with 4 inch, 6 inch, and 1 inch sizes to cover common pipe diameters for home plumbing, repairs, and faucet installations Suitable for hoses, carbon steel pipes, galvanized pipes, ideal for home repairs, and professional installations Features combined internal / external threading for complete pipe tapping without changing accessories, significantly improving plumbing efficiency with simplified operations, Manufacturer: SHINLHUA