Replace sliding door rollers

I am going to order your product, 6' Sliding Door Track Cover, Small, Product Code 80-102 to cover my existing track. I also want to replace the two rollers in the door. I removed one of the rollers and have attached 4 pictures of different angles showing measurements. On the roller were the letters A-(dash)S and the numbers 8188. Please let me know if you can provide this roller. I have not placed an order yet as I'm waiting to see if I can obtain the rollers. Thank you.