Need for door replacement rollers.

Do no thave any model numbers on hardware or doors, so having difficulty identifying these. Do you have a replacement that would work, based on my submitted pictures? These rollers are held in place to the door only by the extended plastic tab, through which one screw goes that also holds together the corner of the door frame. Otherwise, the roller is held in place by its fit into door bottom cavity. PLEASE HELP!

Paul,

My apologies! I had pictures with dimensions but sent you the ones from before dimensions were added. The roller mechanisms go in sliding glass doors in a house built in 1960. I am not certain they are original from that year, but nonetheless pretty old! mechanisms are in real good shape, except for the rollers themselves. Rollers are removable; problem is in that when you try to remove, the old nylon/plastic frame is too worn on inside of roller section, and will break.