Bosch 3-5/8 in. 17-24 TPI Metal T-Shank Jigsaw Blade is an and reliable choice designed specifically for cutting sheet metal and thin metals, including both ferrous and non-ferrous types. This blade measures 3-5/8 inches in length and features a 17-24 TPI progressive tooth design, which ensures smooth, curved cuts across a variety of metal thicknesses ranging from 10 to 16 gauge, or 1/16 inch to 1/8 inch thick. Constructed from high-speed steel, it durability and strength, while the T-shank design provides maximum grip and stability, fitting 90% of all current jigsaw makes and models. For optimal performance and longevity, using proper lubricant is when cutting metal. Model Number: T218A