1/2" offset Door Roller, Rear

I need to replace two upper mirror door assemblies. There are two wheels on the top . The measurements are 3 1/2 inches across X 2 1/4 inches in height.

Looking for a complete assembly or even just the wheels for this hanger

Wheels are three-quarter of an inch diameter by about 3/16 inch thick. Name stamped on assembly is "grant rocket". Diagonal slots allow for raising or lowering the wheels over the door.

Looking to see if it's possible to replace the hardware to my heavy wooden doors. The rollers I see in your catalog are very similar however they are single wheel and the dimension of 3/4 is too large. My wheel is much smaller. If you do not have a replacement for my rollers, could you advise me ... (cont.)

Thank you for providing such a unique hard to find hardware. I am looking for a sliding closet door on a track for a dual roller hinge. The origonal honge house built in 1950's. Can you advise a replacement or alternative. Your compa y is the closet answer I have found.Thank youVivian ... (cont.)