Marketing InformationMilwaukee® Shockwave™ Impact Duty™ magnetic bit tip holders are engineered for extreme durability and up to 10X life. Made from proprietary steel and heat treated to control hardness, the Shockwave™ Impact Duty™ magnetic bit holders feature a powerful magnet allowing for a secure grip and unyielding bit engagement. The two-piece construction of the holders is the optimal assembly for abusive applications. Now use with Milwaukee® Shockwave™ Impact Duty™ insert magnetic nut drivers (1/4 in, 5/16 in, 3/8 in, 7/16 in, 1/2 in).