The Torch™ metal-cutting blades with the Double Duty Upgrade™ feature a tooth form optimized for the longest life and Max 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 the rigidity of the blade, making it the stiffest metal cutting Sawzall® blade on the market. These blades are ideal for making tough, straight cuts. Milwaukee® Reciprocating Saw Blade, Demolition Straight Back, Series: Sawzall® The Torch™, 9 in Length, 1 in Width, 0.042 in Thickness, 10, Matrix II Teeth, 1/2 Tang, Universal Tang, HSS-Co 8 Cutting Edge, Bi-Metal Body, Bright, Applicable Materials: Masonry Material, Most Metal, Wood and Zinc