Thin Kerf metal cutting blades with the Double Duty Upgrade™ feature a tooth form that is optimized for the longest life and increased speed. Tough Neck™ is engineered to protect against tang breakage and delivers the strongest SAWZALL® blade tang on the market. Maintaining a short profile and thin body, these blades are ideal for making fast, flexible cuts. Milwaukee® SAWZALL® Reciprocating Saw Blade, Straight Back Thin Kerf, 4 in Length, 3/4 in Width, 0.035 in Thickness, 10 TPI, Matrix II Teeth, 1/2 in Tang, Universal/Toothed Edge Tang, Bi-Metal Cutting Edge, Bi-Metal Body, Bright, Applicable Materials: Wood, Plastic and Non-Ferrous Metal