Coxreels 131-4-SS Ball Stop with Stainless Steel Hardware for Spring Driven Reel, fits 1/2" Hose, 2-1/2&rdquo; OD x 3/4&rdquo; ID Adjustable solid rubber hose ball stop for spring driven reel Includes stainless steel hardware 2-1/2" Outside Diameter 3/4" Inside Diameter Fits 1/2" Hose