Kidde 21030890 Mariner 5 Fire Extinguisher, 5-B:C alt-37-6628 The check ball provides better

The check ball provides better sealing against reverse water flow that occurs when backing boat

Capable of turning most unconscious persons face up in the water

Retains bearings

End-fed with matching stub

5" diameter round base that contains the universal AMPS hole pattern double socket arm and adapter base that inserts directly to the back of Lowrance Elite-5

Kidde 21030890 Mariner 5 Fire Extinguisher, 5-B:C alt-37-6628 The check ball provides betterSpecifically designed for boating use and corrosion resistant Aluminum and Stainless Steel Construction 12X more corrosion resistant than industry standards 12 Year Warranty Single Use 12 year service free design