Shockwave, 2 Pack, #2 Insert Impact Duty Driver Bit, Engineered To Be Most Durable, Optimized Shock Zone Geometry Is Unique For Each Tip Type To Provide Up To 30 X Longer Life & Absorbs 3 X More Torque, Precise Fit Custom Machined Tip Prevents Stripping & Reduces Wobble While The Custom Alloy 76 Steel & Proprietary Heat Treat Process Maximizes Resistance To Wear & Shock, Built To Deliver Extreme Durability For The Most Demanding Applications.