5 Pack, 5-1/4", 5-10 TPI, T-Shank, Progressor, Jig Saw Blade, For Wood With Nails, All Purpose Blade For Various Materials Including Wood With Nails, Plywood, Particle Board 3/16" - 3-5/8" Thick, Metal 3/16" - 3/8" Thick, Non-Ferrous Metals 5/64" - 1-1/4" Thick, For Fast Cuts & Longer Life In Various Thicknesses, Bi-Metal Construction For Durability & Long Life.