Description DEWALT 4" 10 TPI T-Shank Fast Rough Wood Cutting Cobalt Alloy Steel Jig Saw Blades were tested to ensure that they are ideal for use in a wide range of real world woodworking and wood cutting jigsaw applications. With precision ground teeth, these blades stay sharp and deliver smooth, clean cuts every time. You can increase productivity and speed by cutting faster with deeper gullets and increased free space, removing more material. DEWALT delivers complete confidence with its cobalt alloy steel (Bi-Metal) blades and maximally compatible T-shank, so you know these blades will never let you down."Precision ground teeth stay sharper longer and deliver smooth, clean cutsDeeper gullets with increased free space remove more material for faster cuttingT-shank design fits all Bosch and DEWALT jig sawsManufactured by DEWALTBlade Cutting Material: High Carbon Steel WARNING: This product can expose you to chemicals including Lead which is known to the State of California to cause cancer, birth defects or reproductive harm and Butyl Benzyl phthalate (BBP) which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov