Gedore 1509918 is a 3/8-inch drive hex socket bit set covering sizes 4 mm through 10 mm across ten tools, supplied in a plastic case. Each bit provides a positive fit on standard hex-socket cap screws for driving with a ratchet, breaker bar or torque wrench. Typical use is mechanical assembly, fitter and maintenance work on machinery and fabricated structures. Total tool quantity: 10. Packaging: plastic box.