The Milwaukee Torch Sawzall Blades with the Double Duty Upgrade™ feature a tooth form optimized for the longest life and maximum durability. Tough Neck™ is engineered to protect against tang breakage and delivers the strongest Sawzall ® blade tang on the market. Grid Iron™ features a stamped honeycomb pattern throughout the body of the blade that greatly increases its rigidity, making it the stiffest metal cutting Sawzall® blade on the market. These blades are ideal for making tough, straight cuts.Sold in packs of 518 teeth per inch2 lengths available, 6″ or 9″