modname=ckeditor coupling gap 8mm10mm huge universal joint force shaft connector universal rotary joint for general purpose equipment Specificarion: Universal joint description: 3mm-8mm capacity the aperture of 1 aspect is 3mm and the aperture of the other facet is 8mm. (M4 mechanical device screw for aspect hole) 8mm-10mm potential the aperture of 1 side is 8mm and the aperture of the other aspect is 10mm. (M4 mechanical device screw for facet hole) Material: effective electroplating of iron 8-8mm outer diameter 14mm, length 25mm, M4 facet fixed hole with 4 screws and one wrench 8-10.10-10mm outer diameter 16mm, length 34mm, side fixed gap M4 with 4 screws a wrenc Features: Metal universal joint is acceptable for the use of the instantly shaft of the motor, and it's compatible for the move of assorted sorts of steel equivalent to mannequin car, model ship and robot modname=images&cols=1&colspace=10&rowspace=10&align=center