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