Coxreels 635 Medium Pressure Dual Hose Ball Stop for Spring Driven Reel,Black 3/8" ID x 1/2" OD Go to amazon.com Related posts hose reel ball stop buyer's guide for 2022 FeatureMedium pressure dual hose ball stopFor spring driven reelsMeasures 3/8-inches inner diameter by 1/2-inches outer diameter DescriptionCoxreels medium pressure dual hose ball stop for spring driven reel. Measures 3/8-inches inner diameter by 1/2-inches outer diameter.