7PC SHOCKWAVE IMPACT DUTY CARBIDE HAMMER DRILL BIT SET48 20 9057 POWER TIP WITH DYNAMIC CUTTING EDGES PROVIDES ULTIMATE MATERIAL DISRUPTION FOR INCREASED PRODUCTIVITY ROBUST CARBIDE FOR UP TO 9X LIFE IN CONCRETE PRECISION GROUND CARBIDE TIP DESIGN FOR UP TO 4X FASTER SPEEDS IN CONCRETE EASIER DRILLING. START TO FINISH. CHIP BREAKER DISPERSSES MATERIAL LOAD THROUGHOUT TIP FOR BALANCED DRILLING EXPERIENCE SHARPENED CARBIDE EDGES FOR FASTER STARTS AND LESS BIT WALKING SHOCKWAVE IMPACT DUTY ENGINEERED FOR