Grunt Supawax 500ml – Marine Gelcoat Polish & Protective Wax NZGrunt Supawax 500ml is a premium marine polish and protective wax designed to restore and protect gelcoat, fibreglass, enamel, and painted surfaces. It forms a durable protective layer that shields your boat from UV rays, saltwater, dirt, and environmental damage, while delivering a deep, high gloss finish. This easy to use formula is applied by simply wiping on with a damp cloth and polishing off, making it ideal for both DIY users and professional

Working Load 1650 lb

🔧 Key Features:

and easy to store

reducing drag and improving fuel efficiency by preventing the build-up of slime

Use: Coastal

Made from durable

the RF51500 is built with a UV-stable acetal sheave and 316 stainless steel cheeks

and commercial marine electrical systems

and portable fuel systems

Working load: 340 kg (750 lb)

High‑load

The MK1 design fits most standard brackets and is perfect for trailer setups needing a reliable