Kincromes range of Power Tool Accessories (PTA) are designed and developed specifically for the trade professional with performance and durability in mind. The Kincrome PTA Impact Bits are built tough, featuring an oversized torsion zone to reduce breakage and extend lifetime. Finished in black phosphate for additional corrosion protection, PTA Impact bits also provide a precision fit to help prevent stripping and reduce cam-out, the result is superior fastener adhesion. It all adds up to a bit thats better by design, delivering on the promise of ultimate bit life.