The DEWALT 2X Life Wood & Nail Reciprocating Blades have superior HSS high speed steel teeth with added Cobalt for excellent cutting performance and extreme durability in the most demanding applications The optimised blade design provides increased height and thickness for sturdiness strength and extreme durability Fast and accurate cutting in wood applications thanks to the Plunge Point tip technology which pierces the wood and removes more material The ToughCoat hardened coating lowers surface friction and reduces heat build up to promote long blade life