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1-1/4 inch steel ball bearing roller
Adjustable steel housing assembly
Used by Nu-Air and other glass door manufacturers
Housing dimensions: thickness, 3/4 inch; length, 2-1/8 inch; height, 1-3/16 inch; overall thickness, 7/8 inch.

Diameter: 1-1/4-inch
Housing Tab Style: Plain Back
Housing Width: 3/4-inch
Material: Steel
Roller Diameter: 1-1/4-inch
Roller Edge Type: Concave
Roller Material: Steel
Roller Width: 5/16-inch
Type: Concave
Width: 3/4-inch

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