American Garage Door Supply R3177 Garage Door Roller

American Garage Door Supply R3177 Garage Door Roller is a track-mount replacement roller designed for standard 3-inch overhead door tracks. The wheel is a heavy-duty steel roller with a 2-3/4-inch diameter, paired with a hardened steel stem of 7/16 inch and a long-stem configuration measuring 3 inches, delivering secure mounting and compatibility with typical residential and light commercial doors. Built to endure frequent cycling, this roller uses 10-ball bearings to deliver smooth, quiet operation and long life under typical garage-door loads. The assembly has an approximate working length of 7.75 inches and is packaged as a four-pack, making it practical for door-wide replacement on both sides of the door. Designed for track-mounted applications, this R3177 roller is suitable for standard 3-inch track systems and aligns with common replacement part specifications for American Garage Door Supply hardware.