Manufacturer's product description: - This key has been made of alloy with a structure of the turning between racks and gears can be used to cut flat keys directly. - It is sharp and durable. When using it the No.1-bit-key can be cut out once including (Auto Keys MOTO Keys and even if the door keys). - Besides there is the graduation: 0.5-0.6 (mm) and centerline on the front of the cutting; so - No matter anywhere any time it can be used. So it not only brings convenient to locksmith's work but also saves them much more time. Professional Product : this product is intended for professional use only. Usage support cannot be provided due to the product's nature.