Bosch U101D3 3-Piece 4 In. 6 TPI Clean for Wood U-shank Jig Saw Blades 6 TPI tooth pattern for fast, clean cuts in hard and soft wood, plywood, plastics, OSB, 1/4 In. In. to 2-3/8 In. thick High carbon steel construction for long life in wood materials 3-5/8 In. overall length, 3 In. working length 3 piece pack Clean for Wood blades ensure fine, clean cuts in a variety of materials 1/4 In. universal shank (U-shank) blades are suitable for jig saws from Skil, Black & Decker and others For use in hard/soft woods, plywood, osb, and plastics 1/4 In. to 2-3/8 In. Ground teeth and taper ground back