Rule Model#261 Vented Loop Fitting For 1-1/8" Inch Bilge Pump Hose-RARE-SHIP24HR Condition is Brand New. Model:#261 Brand: Rule Shipped with USPS First Class Package. You Will Receive 1 ea Model#261 Rule Vented Loop Fitting For 1-1/8" Inch Bilge Pump Hose RARE VINTAGE COLLECTIBLE SHIPS N 24 HOURS Packed By Our Award Winning Packaging And Shipping Department Trusted Long Time 20 Year Plus E-commerce Seller LIMITED AVAILABILITY Inventory Box #5060 Features Rule Vented Loop is a heavy-duty fitting for bilge pump installation. The loops prevents the siphoning of water back into your boat from the thru-hull. The one-way duckbill valve allows air to enter the line when not in use while sealing as water passes through. For bilge pump installation One-way duckbill valve