? SURPRISE - Rotating Quiet and Durable More Than You Think.
? SIZE - 2" inch Nylon Garage Door Roller and 4" inch Galvanized Stem.
? DURABLE - Experiment Data 100,000 Cycles and Single Load 150 lbs.
? GUARANTEE - 3 Years Warranty or Returned Purchase Confidence Give You.
? EXPERT - Bearings Manufacture Professional Grade Beginning in 1945.