PH3

5/16" Heavy duty Impact driver bit.

Thunder Zone Impact driver bits with an engineered spiral torsion zone, distribute the applied impact evenly throughout the torsion zone, allowing higher impact loads and greatly extended bit life.​ Among the millions of driver bits produced worldwide...

Among the millions of driver bits produced worldwide each year, only a small percentage reach the high quality standards of Alpha. Alpha’s Thunder Zone Impact Driver Bit range features a patented Spiral Impact Zone, and is the ultimate torsion bit for...

5/16" Heavy duty Impact driver bit.