Milwaukee 49-66-4512 SHOCKWAVE 1/4” Insert Nut Driver 3PK The Milwaukee 49-66-4512 SHOCKWAVE 1/4” Insert Nut Driver 3PK is engineered for extreme durability and up to 30x life. Made from proprietary steel and heat treated to control hardness, the SHOCKWAVE Impact Duty™ Magnetic Nut Drivers feature a powerful magnet allowing for a secure grip and unyielding bit engagement.

The bits feature color-coded rings for quick and easy size identification. Designed for use with Milwaukee® SHOCKWAVE Magnetic Bit Tip Holders 2.36”, 3”, 6”, 12”, 30° Knuckle™ Pivoting Bit Holder and all bit tip holders.