Festool 499475 S 105/4 FSG Jigsaw Blades, 20-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