Exclusive hollow shaft design with Rare-Earth magnetic tip features unobstructed pass-through, even on long bolts Hollow shank facilitates work on bolt applications Cushion-Grip handle allows for greater torque and comfort with handle end that is color coded for easy identification Internal flanges provide solid, twist-resistant shaft anchor Made in USA Full hollow shafts facilitate work on stacked circuit boards or other long bolt applications Internal flanges provide solid, twist-resistant shaft anchor Premium chrome plating for smooth feel and corrosion resistance Cushion-Grip handle allows for greater torque and comfort Color Code: Yellow. Hex Size: 5/16-Inch Overall Length: 3-1/2-Inch Shank Length: 1-1/2-Inch Weight: 0.10-Pound