Roller Replacement Axle, 1/4" x 7/8"

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Hi there, I am helping my friend fix her sliding glass door The center door is the only pieces of glass (there are 3 panels tot) that moves and one of the rollers popped out. Ideally I would like to replace both rollers, use the existing frame and glass, but I cannot figure out how to get the s ... (cont.)

Height 1 1/8" Width 13/16" Wheel Diameter 1 1/8" Wheel Material = Metal Made a mistake removing the 1/4' dia rivet hold the 2 wheels in place. Do you have a replacement axle that is 1/4 diameter by 7/8" in length? Or do you have pricing and availability for a new roller Cartridge? ... (cont.)

But I anticipate rebuilding two axles and wheels. Please, not that the axle is 3/4" long and so is the frame of the patio door it sits in. Can't find this size on your page. Help.

Markings: Del Mar Eng Long Beach CA Pat Pending it looks like the D7000 series style from PE Del Mar catalog p 13, but I am not sure which one it is the wheel diameter is 1.5" on PE Del Mar catalog B=D=1.48" A =.625 I would like stainless steel as the door is near the ocean