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 2 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, 5/16, 3/8, 7/16, 1/2 in ).