The Caddis PR0121A Sure Grip Stud Kit was designed specifically for the Caddis EcoSmart II Grip Soles, featuring their Sure Grip Design, giving you a solid footing on slick rocks and jetties. Steel construction makes these studs safe for saltwater use, packing a little extra corrosion resistance. With 25 studs and 25 screws, you will be sure to add some extra traction to your favorite pair of EcoSmart II Soles.