A set of 3 replacement blades and safety wrench. These are fixed blades and will fit both versions of the Tennis Ball Cutter™, v2.2x and v2.3x. These blades do not require assembly and pierce the tennis ball more easily and, therefore, with less effort. Just spin the blade in using the included wrench and you are ready to go. Remember, your Tennis Ball Cutter will cut thousands of tennis balls before the blades need replacing. Shipping and handling for these blades is included in the price.