botton door roller broken on glass slider. Concave

Hello there. You say the roller has a concave wheel. But the second picture suggests that it's a convex wheel, or rather, it has a rounded edge to fit into a depressed groove. Side view pictures aren't always a gaurantor, so please look over to confirm. If it's in fact a convex roller, see our 23-199 or its ball-bearing counterpart, the 23-225.