Kilian roller

Thanks so much for reaching out to us. I'm afraid I can't identify your roller based on these photos. What you're showing here is just the inside portion of a complete roller assembly. It's missing the outer housing.

For clarity, most standard patio door rollers are made with two housings: the inner housing, which holds the wheel and allows for adjustment, and the outer housing, which mounts to the door. We have to see the whole assembly together in order to recommend a match.

Your outer housing is probably still in the door. Please check for me and we can work from there.