HD Garage Door Roller

1-13/16 Inch Diameter Steel Ball Bearing Heavy Duty Garage Door Roller (Single Pack). These heavy-duty garage door rollers are constructed of steel wheels and rods and they include steel ball bearings. The wheels measure 1-13/16 in. in diameter, the shafts are 6-13/16 in. long and measure 7/16 in. in diameter. Each roller is equipped with a steel inner raceand factory lubricated steel ball bearings. Garage door rollers like these are used on side by side hinge placements for added strength.