Description:

1-1/4 inch concave (grooved) nylon roller. Ball bearing. C-tab housing with rear adjust. As the C tab is positioned around the corner screw, it is captured by the side stile and bottom rail as the screw draws the two sides together. Housing is 9/16 inch wide, 1-1/16 inch tall and 1-5/8 inch long with an adjustment screw on the back end.