The tool is designed to help you with your household repairs. A twist of the base opens up five little portals along the barrel, each with a different screwdriver tip. Simply insert a tip into the end of the gun, and it's ratcheting action quickly puts loose fasteners in their proper place. Plastic and metal. 6 1/4" x 1 3/8" x 3 1/8" high. S&H $7.95.