The Milwaukee Magnetic Nut Driver's 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.Features:HollowCore„ Unlimited Depth - Ideal for long bolts or threaded rod applicationsMagnetic Drivers - Secure fitment in fastening applicationsUniversal driver head fits 4X more fastenersRemoves rusted and stripped boltsColor Coded ID Markings allow for quick tool identification on jobsiteWrench Ready HEX shanks deliver additional leverageChrome Plated - Marine Grade Rust ProtectionForged steel shanks provide longer life and more durabilityDeep well sockets - Drive multiple fasteners