Shockwave, 2 Pack, 1", #2, Phillips Insert Bit, Reduced Diameter To Fit In Drywall Screwguns, Designed For Long Life In All Fastening & Impact Fastening Applications, Forged Tip For Maximum Grip, Geometric Design Provides The Shock Absorption, Proprietary Steel & Heat Treat Process For Maximum Strength & Durability, Skin Carded Packaging.