Among the millions of driver bits produced worldwide each year, only a small percentage reach the high quality standards of Alpha. Alphas Thunder Zone Impact Driver Bit range features a patented Spiral Impact Zone, and is the ultimate torsion bit for Impact Drivers. Features include Premium quality S2 raw material, precision head manufacturing, full body hardness and magnetism. The result? Alpha driver bits show less wear, have a longer service life, experience less cam-out, and provide overall improved operational and economic benefits.