1.Carbon steel pipe tap is ideal for pipe fittings,internal threads cutting,with 8 to 10 threads chamfered for easy starts in tough materials.

2.Left hand spiral flutes are designed to embed screw extractor deeper into the metal as you turn the tool, so as to increase the extractor's grip.
3.Both are made of durable hardened steel with heat treatment for extra hardness, promising you a long lasting screw extractor tool of rugged material and outstanding performance.