Marketing InformationOur Shockwave™ Impact Duty™ magnetic bit holders are engineered for extreme durability and up to 30X life. The Milwaukee® magnetic bit holders are made from proprietary steel, heat treated to control hardness. The Shockwave™ magnetic bit holders feature a powerful magnet, providing you with a secure grip and unyielding bit engagement. Each bit holder has a two-piece construction for optimal assembly in abusive applications. Our SHOCKWAE Impact Duty™ magnetic bit holders can now be used with Milwaukee® Shockwave™ Impact Duty™ insert magnetic nut drivers (1/4 in, 5/16 in, 3/8 in, 7/16 in, 1/2 in).