Dewalt DW4821B25 8" 18TPI Straight Back Bi-Metal Reciprocating Saw Blade (Package of 25/EA), Yellow,Dewalt,DW4821B25,300023" /> Aggressive shank angle increases tooth contact maintaining cutting speed as blade wears for longer b Patented tooth design utilizes sharper tooth geometry for faster cut rates Specially formulated anti-stick coating minimizes friction and gum-up for smoother cuts Package:25/EA