SHARK BLADES PRO BI-METAL HACKSAW BLADES Virtually unbreakable and shatter proof with strong precision ground teeth for all types of metals MAIN FEATURES Shark Blades Quality Flexible and shatterproof Made from strong high speed steel Keeps it's sharpness longer Extra sharpness with extreme cutting performance and wear resistance Vastly superior to most hard high steel blades Comes with a handy strong plastic tube to keep the blades in Perfect for all metals, plastics and wood cuts FAST FREE DELIVERY .