Moeller 099085-00 Pro Series Inboard Motor Flusher Installs in seconds for out of water engine flushing applications Designed to fit inboards, performance ski boats and all boats with a thru-hull water intake Stainless Steel T-fitting slides into the intake slot in either direction for a quick fit Flusher is supported with 360 degree plastic support ring insuring a tight fit to the bottom of the boat, no more trying to fit between the trailer bunks and secure a pole to the ground