Shockwave, 4 Piece, 1-7/8" Magnetic Nut Driver Set, Proprietary Steel & Heat Treat Process For Maximum Strength & Durability, Strong Magnetic Tip For Secure Grip, Color Coded Band For Easy Size Identification, Chamfered Edge For Fastening In Tight Spaces, Kit Includes: Shockwave 1-7/8" Magnetic Nut Driver 1/4", Shockwave 1-7/8" Magnetic Nut Driver 5/16", Shockwave 1-7/8" Magnetic Nut Driver 3/8", Shockwave 1-7/8" Magnetic Nut Driver 7/16".