The Milwaukee Sawzall 9 in. Torch metal-cutting blade 1 pack is optimized for the longest life and maximum durability when cutting metal 1/8-5/16 in. thick. Tough Neck ribs are engineered to protect against tang breakage for the strongest Sawzall blade tang on the market. This Milwaukee blade features Grid Iron， a stamped honeycomb pattern throughout the body of the blade that greatly increases its rigidity， making it the stiffest metal cutting Sawzall blade. The matrix II bi-metal blade is ideal for making tough， straight cuts in thick metals with 18 TPI.