One piece hardened carbon steel body and hex shank for a stronger, more concentric bit that will not disassemble whendrilling in deep or tough materials. Carbide grade tip for faster penetration and longer bit life. Hammer drill rated for usein either standard or hammer drills. 1/4 IN quick-change hex for fast bit changes. Use in quick-change chucks, conventional adjustable drill chucks, and hex adapters for more versatility.