5).Excellent Performance -This rectangle water flusher protects your boat's engine from sand, salt, and all the contaminants that might damage the condition of your boat's engine.
1.Crew Type Stainless Steel Drain Plug for Boats - Fits 1 Inch Hole. 2.Made of Plastic (PVC) 3.Cap Size:4.85"*3" (123mm*76mm)