Plastic cap on my bifold door rods

A quick learner from San Antonio tx says:
June 3, 2019
I need to replace the plastic caps on the end of the metal rods. Rods are 5/16. Doors are about 50 yrs old.
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Paul from SWISCO responded:
June 5, 2019

Thanks for contacting SWISCO. Our nylon caps inner diameter is 1/4" and there isn't a nylon cap with an inner diameter 5/16". I would suggest, removing your nylon caps to determine the inner diameter. You can also send us a photo of the complete pin in the door to see if we recognize it.
Bifold Door Pin Cap, Benchmark
Bifold Door Pin Cap, Benchmark
21-100
$0.78
Bifold Pin Cap, 3/16" ID
Bifold Pin Cap, 3/16" ID
21-106
$0.85
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