LENOX® Tools 1970981 T-Shank General Purpose Jig Saw Blade Assortment, 10-Piece provides users with improved blade durability and clean, smooth cuts in wood. Power Blast Technology™ strengthens the blade to reduce breaks and increase durability. Precision ground teeth with optimized tooth angles provide a clean finish. Patented T2 Technology provides fast, efficient cutting in a range of metal cutting applications.