Made of high quality carbon steel, wear-, not easy to break and deform, sturdy and . for precise drilling, easier to use. This product is suitable for reaming operations on wood, thin tin, plastic and other materials, complete specifications, manual operation, easy to work. Carbon Steel Taper Reamer Set of 4, Length: 130mm/5.11inch, Width: 15mm/inch, Booster Bar Length: 90mm/3.54inch, Saw Drill: 6mm/0.24inch. Universal hexagonal shank compatible with a variety of machines, easy to operate, dual-purpose hand power, manual crossbar, uniform force. Tip: The size data are all measured manually, with a slight error. Please wear safety equipment when using the tool., Manufacturer: Akfldms