Festool 486547 S 105/4 Fast-Cutting Jigsaw Blade, 4 1/8 Inch, 6 TPI, 5-pack Ideal for softwood, hardwood, melamine, veneered plywood, and chipboard. Cross-set teeth for fast and clean cuts, saving time on rework. HCS tool steel quality, 4 1/8 inches long, 6 TPI, for materials up to 3 3/8 inches. Universal T-shank design fits most professional jigsaws. Made from high-quality materials in Germany