Vega T150T15A Impactech Torx 15 Power Drive Bits feature a patented spiral torsion zone that absorbs impact resulting in longer tool life. Vega T150T15A Impactech Torx 15 Power Drive Bits precision engineered tips are manufactured with a proprietary CNC machining process and are made from S2 Modified impact resistant steel. Vega T150T15A Impactech Torx 15 Power Drive Bits are tested to outperform all leading brands in life cycle and tip failure testing.