Roller Assembly for Sliding Patio Door
This Roller Assembly has Steel Ball Bearings
Its wheel is Flat with a diameter of 5/8 inch
Its housing is constructed out of Diecast and is adjustable
This design is used by several door manufacturers
Priced each, sold each

Housing Tab Style: Unique Housing
Housing Width: 13/16-inch
Roller Diameter: 7/8-inch
Roller Edge Type: Flat
Roller Material: Steel
Roller Width: 1/4-inch

Contents
1 roller assembly

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