Sutton Tools Mega Sharp reciprocating saw blades have a patented M-tooth geometry designed to cut on both forward and back stroke whilst minimising tooth breakage and increasing blade life. Superior results can be achieved at the highest machine speed settings for very fast, clean cuts in metal. Suitable for cutting steel, copper (2.5-10mm), wood & nails and PVC plastics.Made from Cobalt Bi-Metal HSS for flexibility, heat & break-resistance, lasting up to 10X longer than high carbon steel blades.Double shank design for complete use of cutting length and up to 60% better economyMade in Germany.