Vega T125TT15A Impactech TORX Tamper 15 Insert Bit feature a patented spiral torsion zone that absorbs impact resulting in longer tool life. Vega T125TT15A Impactech TORX Tamper 15 Insert Bit precision engineered tips are manufactured with a proprietary CNC machining process and are made from S2 Modified impact resistant steel. Vega T125TT15A Impactech TORX Tamper 15 Insert Bit are tested to outperform all leading brands in life cycle and tip failure testing.