The Snap-on FA10E is a 3/8-inch drive, 5/16-inch SAE standard hex bit socket driver. It accepts a 5/16" hex bit and is designed to be used with a 3/8" drive ratchet to turn hex-socket fasteners in automotive and equipment maintenance. Stock number FA10E, this tool is part of Snap-on's SAE hex standard lineup for 3/8" drive applications.
