Coxreels 131-3 Ball Stop for Spring Driven Reel, fits 3/8" Hose, 2-1/2" OD x 21/32" ID Go to amazon.com Related posts hose reel ball stop buyer's guide for 2022 FeatureAdjustable solid rubber hose ball stop for spring driven reelIncludes steel hardware2-1/2" Outside Diameter21/32" Inside DiameterFits 3/8" Hose DescriptionCoxreels hose ball stop for spring driven reel. 2-1/2-inches diameter. Measures 3/8-inches inner diameter by 21/32-inches outer diameter.