1-1/4 inch steel ball bearing roller
Adjustable extruded aluminum housing
Used by several glass door manufacturers
Housing dimensions: thickness, 3/4 inch; length, 2-3/16 inch; height, 1-1/4 inch; overall thickness, 7/8 inch.

Diameter: 1-1/4-inch
Housing Tab Style: Unique Housing
Housing Width: 3/4-inch
Material: Steel
Roller Diameter: 1-1/4-inch
Roller Edge Type: Concave
Roller Material: Steel
Type: Concave
Width: 3/4-inch
NOTE: The roller housing has a tapped hole below the adjustment screw
Sold each, priced each

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