Polyform A-4 Buoy 20.5" Diameter - Red [A-4 RED] Specials eliminates high and low pressure

eliminates high and low pressure leaks

Built-in NMEA0183 Loran/GPS interface for precise course-line navigation along routes

Cup Holder: Yes

ProMariner's Universal Remote Battery Bank Status Monitor can be conveniently located to monitor the charge status of up to three 12 volt batteries without accessing the charger

Label recesses for circuit identification

Polyform A-4 Buoy 20.5" Diameter - Red [A-4 RED] Specials eliminates high and low pressureA 4 Buoy 20. 5" Diameter Red The A Series is the product that launched the Polyform story. This all purpose product, with the signature "blue ropehold" has proven itself in the most adverse conditions. Marking gear used in heavy seas is no easy task. That's why more fishermen use Polyform A Series than all other buoys combined. You name it, ocean, sea, or river, and the A Series has been there. Put your trust in Polyform's most versatile and well