This Tub and Sliding Shower Door Roller has a 7/8 inch (22.2 millimeter) diameter oval edge nylon ball bearing roller with a 8-32 threaded hex hub. This sliding shower door roller is used by several shower door manufacturers.
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Finish/Color: White
Diameter: 7/8 in. (22 mm)
Roller Thickness: 1/4 in. (6 mm)
Style: Oval Edge