Platte River 124094, 8-pack, Hardware, Furniture, Miscellaneous, Glider/Rocker Bearing Assembly Only Simple to install on restorations or new construction. Specifications: Finish=NATURAL, Material=STEEL, Diameter=1-1/8 in Specifications: Inside Diameter=3/8 in, Overall Length=1-7/16 in, Thickness=3/8 in