Bosch T144D100 100-Piece 4 In. 6 TPI Speed for Wood T-Shank Jig Saw Blades Designed for straight and very fast cuts in wood, OSB and plywood 1/4 In. to 2-3/8 In. thick 6 TPI tooth profile and high carbon steel blade body for exceptionally fast cutting and long life in wood 4 In. overall length, 3 In. usable length 100 piece pack offers maximum value