Three-pack of compact insert-style magnetic nut drivers engineered for extreme durability. Custom Alloy76 steel and the Shock Zone design absorb peak torque to prevent breakage, delivering up to 10X longer life than standard nut drivers.

• 5/16" hex size, 1-7/8" insert length
• 1/4" hex shank fits all impact drivers and drill/drivers
• Impact Duty magnet prevents loosening over time
• Chamfered edge for fastening in tight spaces
• Color-coded ring for quick size identification
• Custom Alloy76 steel with proprietary heat treatment
• 3 nut drivers per pack