Titan 3/8" X 8" Length Auto Flex Universal Joint Extension AdapterTitan 3 8"e; x 8"e; Length Auto Flex Universal Joint Extension Adapter Drive: 3 8"e; OA Length: 8"e; Chrome vanadium steel construction with rust resistant mirror polish and red electrostatic finish Knurling for sure grip and Detent ball and notch for secure socket retention Auto Flex universal adapter is engineered to spring back to center The universal adapter articulates under spring tension providing semi rigid directional control and accuracy