Metal/Demolition Saw Blades aredesigned to cut through a wide variety of materials. These diamond bladesare constructed from the highest quality diamonds available. This allows the Blade to cut twice as fast as an abrasive blade and last up to 70 times longer. The Blades are used in emergency situations by fire departments and rescue units throughout the world. Rescue saw blades cut through materials such as metal, chains, locks, iron fencing, re-bar, steel, pipe, ductile iron, cast iron, copper, concrete, masonry, stone, stucco, wood, HDPE, PVC, plastic, metal, roofing, steel studs, and more.