National Pipe Thread Taps. Precision Cut Threads, Accurately Formed For Consistent, Exact Threading. Heat Treated And Tempered For File Hard Threads, And Longer, Useful Life. Designed For Hand Cutting Applications. National Pipe Thread Tap Sizes For Internal Threading On All Types Of Pipes.
Replacement power bit for DuraSpin technology integrated auto-feed screw system. For DuraSpin DS212-18V, DS215-18V, DS232-AC, DS235-AC. 2 bits per package.
Brazing formula optimizes drilling. Unique flute geometry provides efficient dust removal. Centering point provides accurate and precise round holes. For drilling into brick, block, and concrete.