Klein Tools' 5/16-Inch Magnetic Nut Driver is backed by our lifetime guarantee of quality and reliability. Additionally, this nut driver meets or exceeds applicable ASME/ ANSI specifications. Klein's nut drivers are perfect for professionals looking for a lifetime of dependability in a 100-Percent US sourced and manufactured product.Features Internal flanges provide solid, twist-resistant shaft anchor Nut Driver with powerful nut-holding magnet built into shank Smooth Comfordome handles fit the palm of the hand comfortably Handles are color-coded for easy identification Made in USA Smooth Comfordome handles fit the palm of the hand comfortably and are color-coded for easy identification Hollow shafts facilitate work on stacked circuit boards or other long bolt applications Powerful nut-holding magnet built into shank Chrome-plated shaft helps prevent corrosion Meets or exceeds applicable ASME / ANSI specifications Warnings Always wear approved eye protection. NOT insulated. Will NOT protect against electrical shock. Shaft Length: 6 in (15.2 cm) Overall Length: 9.625 in (24.5 cm) Size: 5/16 in Width: 1 in Height: 1 in Weight: 0.15 lbs Magnetic: Yes Insulated: No Material: Chrome-Plated Steel Handle Color: Amber SAE/Metric: SAE Measurement Standard: SAE Configuration: Magnetic Style Name: 5/16-Inch Tip Nut Driver Sizes: 5/16 in Country of Origin: United States Compliance: ASME, ANSI DownloadsVideo DownloadVideo DownloadSpec Sheet