Check the listing for details. Single Chain Link Gate U-Groove Pipe Wheels-By Sourdough Gate Hardware. Color: Silver, Condition: Used, Made in China. Listed at 22.95 USD. The Highest Quality Pipe Wheel on the MarketDesigned to Replace Worn Out or Low Quality Pipe Wheels on Sliding Chain Link GatesThis 5" U-Groove Pipe Wheel is used in thousands of installations nationwide. The body is cast iron. The rolling surface is machined to ensure the wheel glides smoothly over the pipe. The surfaces are then zinc coated for long lasting protection. We specify maintenance free, low rolling resistance sealed bearings instead of Zirc fittings. No need to keep a maintenance schedule!Smooth and Quiet OperationSpecifications:For use with 1-5/8" OD pipe5" OD X 2-5/8" Wide WheelFits 5/8" OD or 18mm boltSealed Bearings for a long and maintenance free service lifeCast Body with machined rolling surface Package consist of a single u-groove wheel