Tough and long-lasting tungsten carbide - never needs resharpening. Fits all popular makes of power tools. Replaces conventional specialist blades. Resistant to heat and abrasion. Cuts on both up and down stroke. Saws through: Brick, cast metals, ceramic tile, composites, cement backerboard, fiberglass, flagstone/slate, hardwood laminates, marble, plastic plywood, PVC, and reinforced cement. 3/4" width. Medium grit. 1 per card.