Tungsten Carbide Blades The Trademark Tools Tornado Double Blade Saw has two specially designed blades spinning in opposite directions, providing smoother finished cuts with less vibration and kickback than any single blade saw! The patented QUADForce Blade System allows you to reverse and reuse one blade, increasing blade life and cutting capacity by 50%. The integrated blade lubricating system makes cutting a variety of materials including aluminum , copper, stainless steel and cast iron, easy. Save time and make precise cuts with Trademark Tools Tornado Double Blade Saw.