ATTWOOD T-500 RECIRQ AERATOR KIT Recirculates Livewell Water To Keep It Cooler And Rich In Oxygen And Also Use As A Backup Pump For A Fail-Safe System; Plastic; Single Outlet; 500 GPH; With Tsunami Aerator Pump With Short Inlet And Threaded Outlet/ One 4125-1 Aerator Spray Head/ One 4232-1 Stainless Steel Strainer/ Two Plastic Hose Clamps/ One 3/4 Inch Diameter x 23 Inch Length Poly Hose And One Straight Thread To Barb Connector