Pitt Cooking Systems Defendi 6824.28 BTUs 2 kW Gas Cooktop Brass Burner Cap The brass material is corrosion, stain and grime resistant. It will 100% last longer than traditional aluminum burners. Easier To Clean. Another underrated benefit of brass burners is that the material is resistant to stains and grimes. Upgrade your Pitt or other brand cooktop Aluminum with Elegant Brass Burners.