Applications :For attaching exterior foam insulation to all base materials including wood, steel and concrete Contractors :Insulation Contractors, Waterproofers, Roofers Recommended Pin Size(s) :55080 780 Trak-it Step Shank Pins (all base materials)55081 1" Trak-it Step Shank Pins (all base materials)55034 1-1/4" break free rolled point Trak-it Pins55035 1-1/2" break free rolled point Trak-it Pins