Bosch speed for wood blades are an economical choice for fast cutting and sizing of wood and wood products. High carbon steel construction for long life. T-shank design for maximum grip and stability which fits 90 percent of all current jigsaw makes and models. T-shank jig saw bladeOptimized configurations cut precisely and easily in conventional and specialized materialsProgressor tooth design provides superior performance in speed and cleanliness of cutMakes straight and very fast cutsGreat for hard and soft wood, particleboard and plywood .28 in. blade height4 in. overall length5 per card