Bonderized Paint Grip Steel is galvanized steel that is processed through a phosphate bath. The bath has a corrosion inhibiting, crystalline zinc phosphate that promotes adhesion of a coat of paint. Paint Grip has a dull gray appearance but is made specifically for those that want to do a custom color as these gutters are ready for paint. The phosphate bath acts as a primer coat so you're all ready to start painting. Our Paint Grip line of gutters is available in the k style profile and the half round profile and we carry all the accompanying accessories.