High-impact plastic Hose Adapters will not rust, corrode or discolor.These Hose Adapters are heavy-duty molded, non-corrosive, high-impact plastic and designed to adapt existing hose to your pump ports, thereby eliminating the need to purchase a new bilge hose.Use straight or double stepped adapters for Rule Pumps and thru-hulls.Use 90 elbow adapters for rigid pipe installations of sump and utility pumps. The adapters snap onto the discharge port without the need for a hose clamp.ModelTypeOutletHose or Fitting443911Straight1 1/2" (38mm)1 1/8" (29mm) hose354670Double stepped1 1/8" (29mm)3/4" (19mm) or 5/8" (16mm) hose18541590 Elbow1800 GPH pump1" female NPT fitting