The Starrett KMP09021 TCT General Purpose Holesaw Kit contains a selection of sizes to cover a variety of different jobs. TCT holesaws offer a smooth cut, with minimal heat build up. With carbide tipped teeth for outstanding cutting performance and product durability. They will power through: wood, MDF, plastics and ceramic wall tiles. With a cutting depth of 54mm (2.1/8in), for cutting through strapping and joists. Suitable for use in mains and battery powered tools. Packed in a sturdy EVA carry case. Contains: 9 x Holesaws: 19, 22, 29, 35, 44, 51, 57, 64, 68mm 2 x Arbors: A1E, A17-38E