Features and Benefits:Chrome Plated - Marine Grade Rust Protection;Color Coded ID Markings allow for quick tool identification on jobsite;Deep well sockets - Drive multiple fasteners;Forged steel shanks provide longer life and more durability;HollowCore? Unlimited Depth - Ideal for long bolts or threaded rod applications;Magnetic Drivers - Secure fitment in fastening applications;Removes rusted and stripped bolts;Universal driver head fits 4X more fasteners;Wrench Ready HEX shanks deliver additional leverage;Milwaukee? 7 pc. Metric HollowCore? magnetic nut drivers feature a thread-thru design for unlimited depth in threaded rod and long bolt applications. The magnetic universal driver heads fit 4X more fasteners including: square, hex, 12 point & spline. Designed for maximum durability the wrench ready hex steel shanks are forged and chrome plated. Milwaukee nut drivers are designed for the jobsite and include Milwaukee's Limited Lifetime Warranty.