Produced using state-of-the-art processes, high-tech machinery and premium quality raw materials, these reciprocating/sabre saw blades have been specifically designed to ensure maximum lifetime and performance in all materials. For cutting wood with nails or metal, chipboard less than 175mm (7") in thickness, plastic profiles with less than 175mm (7") in diameter, glass Fibre reinforced plastic/epoxy less than 50mm (2") in thickness. Premium Bi-Metal with 8% Cobalt provides superb results and guarantees long life when cutting metal, plastic and wood with nails.