The is perfect for inboard engine flushing or running an inboard engine out of the water for maintenance. Place the plunger over the flush port and extend the handle until it supports it firmly against the hull.• Adjusts from 15.5" to 30"• No tools required, installs in seconds• Telescoping handle provides precise alignment• Flush away sand, silt, salt, or mud with ease• Perform engine maintenance while boat is out of water• Large cup provides a secure fit and prevents water blow-by Large cup provides a secure fit and prevents water blow-by Telescoping handle provides precise alignment Adjusts from 15.5" to 30" | Inboard Motor Flusher