Description: This is a dual function universal joint that can be used as a wobble and straight extension bar. This tool allows you to extend the socket when turning the bolt nut in deep areas. A dual function dual type that can be extended to 20° as a straight extension bar with a length of 2.4 inches (60 mm) when inserted into the deep. Product Specifications: Drive: 1/2 inch DR (12.7 mm) to 3/8 inch DR (9.5 mm) Total length: 2.4 inches (60 mm) Material: Chrome molybdenum. Surface Treatment: Mirror Note: Please do not add two or more joints.