1/4 3/8 1/2 Inch Impact Universal Joint Set Swivel Knuckle Joint 360 Degree Flexible Joint Socket Adapter for Bicycle/Car Repair _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ Specification: _x000D_ Origin: Mainland China _x000D_ Model Number: Swivel Knuckle Joint _x000D_ Color: Black _x000D_ Material: Chromium molybdenum steel _x000D_ Specification (inch): 1/4, 3/8, 1/2 (optional) _x000D_ Length x outer diameter x aperture (mm): _x000D_ 1/4 inch :44 x15x 6.35 mm/1.73x 0.59x 0.25inch _x000D_ 3/8inch: 49 x28x9.5 mm/1.92x1.10x0.374inch _x000D_ 1/2 inch: 70 x 38 x 12.5 mm/2.75 x 1.49 x 0.492 inch (optional) _x000D_ _x000D_ _x000D_ Note: _x000D_ Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! _x000D_ Please allow 1-2cm measuring deviation due to manual measurement._x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ 3 x Swivel Knuckle Joint _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_