Attwood Marine - ZAMAK Cleats - 6" - 6245-6 - Bulk. For decades, Attwood has set marine industry standards for great looking, durable, freshwater hardware. Our Perma-Plate process provides the best chrome-plating in the industry with eight individual layers of plating. Each layer adds to the product's durability and corrosion-resistance. This Perma-Plate process produces the finest, most corrosion-resistant ZAMAK hardware available exclusively from Attwood.. WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.