10PC SHOCKWAVE IMPACT DUTY CARBIDE HAMMER DRILL BIT SET48 20 9058 UP TO 5X LIFE IN CONCRETE ROBUST CARBIDE FOR UP TO 9X LIFE IN CONCRETE PRECISION GROUND CARBIDE TIP DESIGN FOR UP TO 4X FASTER SPEEDS IN CONCRETE DURABLE CARBIDE TIP FOR LONGER LIFE IN CONCRETE AND HARD AGGREGATE SHARPENED CARBIDE EDGES FOR FASTER STARTS IN CONCRETE, BRICK, AND BLOCK PRECISION GROUND CARBIDE TIP FOR LESS BIT WALKING SHOCKWAVE IMPACT DUTY ENGINEERED FOR HAMMER DRILLS AND IMPACTS WIDE FLUTE DESIGN FOR FAST, EFFICIENT DUST