• Heat-treated M42 bimetallic material with sharp teeth, durability, and good stability. • Ideal for cutting wood, plastic, machinable metal, nail-embedded wood, plywood, pipes, and steel. • Provides shock-resistant teeth and resists tooth peeling. • Soft spring steel creates a flexible backing material that absorbs the impacts of drilling holes in hard-to-cut materials. • Cuts faster and smoother with less vibration thanks to its variable pitch teeth. • Creates holes for pipe installations, door locks, electrical conduits, hoses, and antennas. • Electron-welded teeth to unbreakable alloy bodies that absorb shocks. • Packaged in individual boxes. • Includes additional replacement bits and anti-rust oil for corrosion resistance.