The Reed 63665 2PK-30-40 Replacement Cutter Wheels are great for copper, aluminum, brass and steel tubing. The Reed 63665 will fit the following Reed tubing cutters: TC3Q, TC4Q, TC5Q, TC6Q, and TC8Q Features: * Convenient two-pack allows you ot keep extra blades on hand * Direct replacement for above listed Reed tubing cutters What"s In The Box: * Reed 63665 2PK-30-40 Replacement Cutter Wheels - 2-Pack