Impact Pro Black Oxide Drill Bits are made from premium M2 steel to withstand heat and wear under rigorous drilling applications. Designed for use in soft metal, mild steel, wood, plastic and PVC. Premium Impact Pro black oxide drill bits are designed for impact drivers, standard drivers and adapters. Century 135 Degree Quick Cut Points are self-centering and penetrate faster with less pressure. Will not walk or wander at the starting surface.