Star D Professional Tripod with nylon bushings and plastic collars
Small leg with plastic bushings. Two of the small legs look like this and do not tighten enough to lock leg due to worn out nylon sleeve ??.
The third small leg for some reason has brass threads for the collar and a beveled plastic bushing which is different than the other two small legs (above). I did not pull the leg completely out because it stops and I didn't want to force it to see if it also has plastic fittings on the end like above leg. This leg is not a problem it works and tightens ok.