Discontinued, possible substitute 13098.

Steel Ball Bearing Roller, Adjustable extruded Housing assembly. 
Fits Daryl and other doors
Housing 11/16 Wide, 1 inch tall. Flare tabs on bottom of housing. 

Diameter: 1-1/4-inch
Housing Tab Style: Plain Back
Housing Width: 11/16-inch
Material: Steel
Roller Diameter: 1-1/4-inch
Roller Edge Type: Concave
Roller Material: Steel
Roller Width: 5/16-inch
Type: Concave
Width: 11/16-inch

Helpful Article: How to Replace Rollers in an Aluminum Sliding Glass Door