Tough and long-lasting tungsten carbide - never needs sharpening. Fits all popular makes of power tools. Replaces conventional blades. Resistant to heat and abrasion. Cuts on both Up and down stroke. Saws through brick, cast metals, ceramic tile, composites, cement backer board, fiberglass, flagstone/slate, hardwood laminates, Marble, plastic, plywood, PVC, and reinforced cement. Carded set includes: 6", 9", and 12". 3/4" Width, Medium grit blades. This product is manufactured in United Kingdom. This product meets customer requirement.