Power screwdriving bit is cryo-temp hardened for longer tip life. 1/4″ hex shank fits all standard bit holders and hand-held drivers. ACR ribs on bit tip reduce cam-out. Special torsion zone reduces bit slippage and fracture. Precision formed tip for proper fit. Carded.
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.
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.