Diablo DS0614BF5 next generation reciprocating saw blades with full contact arch design. These blades are specifically for maximum performance in metal cutting. The Full Contact Arch Design has an ultra hard cutting edge. This provides faster cuts in fewer passes. This results in less heat build-up to deliver 5x longer cutting performance than those of standard blades. Additionally, these blades have Perma-shield coating. As a result, they have protection from heat, gumming, and corrosion. Ideal for medium metals 1/16-5/16 inches.