Somes times when our cutter knife is not responding then we need to replace the blades. Such is the product use to replace the old blades. It comes in a plastic built pack. Now no need to buy the new cutter for no reason just replace the old ones with new blades.These cutter blades are made up Metal and comes in a plastic holder. Each pack consist of 10 18mm metalic blades with sharp edges to replace your old cutter body.