The Sourdough Gate Hardware SGH-05 Pipe Track Wheel is the only wheel on the market that combines: * Machined cast steel wheel for smooth operation. * Precision maintenance free bearings for extended life. * Double U bolts for added holding power. * Commercial grade, rated for total gate weight of 1,000 lbs * Durable silver finish. This products sold in pairs and installs in minutes with common tools. Used by professional fence contractors and now available to the general public. Fits 1 7/8" or 1 5/8" gate frame, rolls on 1 5/8"pipe track.