Product Information Material: Malleable Iron Select a Product Part NumberHose IDHose OD SK291/2" (13mm)22mm-29mm SK343/4" (19mm)28mm-32mm SK391" (25mm)35mm-42mm SK441-7/64" (28mm) SK551⅜" (35mm) SK601-21/32" (42mm) SK732" (50mm)