Guidi's Premium quality Chrome Plated Brass thru-hulls. Brass alloys contain higher levels of zinc and therefore are more suited to above waterline and fresh water applications.
Thread : G = ISO 228/1 (BS 2779) BSP Compliant with UNI EN ISO 9093-1 RINA Validated
All thru-hull fittings should be electrically bonded to help prevent galvanic corrosion. See 1145 series for bonding washers & terminals
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