Shockwave, 25 Pack, 1", #2 Phillips Insert Bit Tic Tac With 2.36" Magnetic Bit Tip Holder, Geometric Design Provides The Shock Absorption, Proprietary Steel & Heat Treat Process For Maximum Strength & Durability, Forged Tips For Maximum Grip, Bit Holders 2 Piece Construction Withstands Abuse In Impact Applications.