Service Kit for S500 & S800 Bilge PumpsSpecifications: Outlet Diameter: 3/4" (19mm) & 1" (25mm) Compatible with Tsunami Bilge Mk2 Kit Includes (1 each): 90-degree outlet Straight outlet Washer Non-return/check valve WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.