Different AGAIN!! This one does not have the square at the ends of the shaft. It is round which suggests that the fittings/clamps that mount the visor itself clamp onto the ends of the shaft & hence the tension can be achieved with them as opposed to Syd’s Type 1 which requires the complicated system of spring, leather & plain washers & screwed plug it has. I LIKE the simplicity of the Tiffany ones. When I make my set I think this is the way I will go!! All we need now is the photos of the visor mounting clamps for Tiffany!!