Prime-Line D 1781 Single 1-1/2 In. Steel Ball Bearing Roller, U-Back Style, Adjustable (Single Pack), Yellow zinc

1-1/2 inch steel roller, Ball bearing, U-back housing with rear adjust, When installed the U inch back housing is drawn tightly into position against the side stile as the mounting screw or bolt is tightened, The housing is 3/4 inch wide with a dimple width of 0.760 inch (3/4 inch), 1-5/32 inch tall with a rear adjusting screw