Original Title: 1/2 in. Drive 120XP 50-250 ft./lbs. Flex-Head Electronic Torque Wrench with Angle. Title: 1/2 in. to 3/4 in. The flex head wrenches are available in 3/8 in. and 1/2 in. The electronic torque wrenches ensure a more precise fastener torque level and are available in a 3/8 in.