久久伊人五月丁香狠狠色,国产AV午夜精品一区二区入口,日韩丰满少妇无码内射,99久久国产宗和精品1上映

Vent line connecting part

Used in automobiles crankcase ventilation pipe tubes connect the air pipe connection Not only can rely on the inner hole wall of a butt joint and the sealing ring of the trachea joint interference fit to realize the two kinds of joint connections, and by docking a card table face to match the tracheal joint cuneate raised face, realize the double insurance.