The HEXAGRIP Alloy Cleat & Carbide Stud Pack contains everything you need to fully cleat and stud a pair of Grundns Vibram wading outsoles. We designed our outsoles to accept both Hexagrip 19mm alloy cleats and Hexagrip carbide screw-in studs in an under-foot pattern that optimizes in-river traction and durability while maintaining Vibram rubber contact in critical traction zones.