Milwaukee 48-32-4411 Shockwave insert bits deliver precision driving performance for high torque impact applications Each pack includes 2 sealed cards with 2 bits per card totaling 4 #1 Phillips driver bits Forged from premium S2 steel with black phosphate finish these 1" bits provide corrosion resistance and extended tool life The 1/4" hex shank ensures secure fit in impact drivers while reducing cam-out during repetitive fastening.