14 TPI tooth designed for medium-fine cuts through steel, aluminium or plastic products with versatility of cutting through timber and nail embedded timber. Bi-Metal construction flexes and resists breaking for durability and long life. Produces clean straight cuts with a good surface finish in timber and composite timber. T-shank design allows allows user to quickly change blades without using an external tool and provides maximum grip and stability which fits all professional jig saw brands. Proper lubricant is recommened when cutting metal.