
Dash Sizing for Hoses and Tubes Explained
Each dash size corresponds to a progressively larger diameter, measured in sixteenths of an inch. “-1” is 1/16, “-2” is 2/16, and so on. In this case, -6 hose would indie a hose with an inside diameter of 6/16”, or 3/8". In another example, a -10 tube would indie a tube with an outside diameter of 10/16", or 5/8".