It is made of high-quality hard steel, which has high hardness and is not easy to corrode High precision, suitable for high-precision machining and long service life; With drill head, can be used as a replacement drill handle The use method is simple, practical, and has a strong connection performance Can be adapted to a variety of drilling machines, milling machines, drop-in welding, turning heads, etc. Features: It is made of high-quality hard manganese steel, which has high hardness and is not easy to corrode. High precision, suitable for high-precision operations and long service life. The use method is simple, practical, and has a strong connection performance. With drill head, can be used as a replacement chuck handle. Can be adapted to a variety of drilling machines, milling machines, rocker shafts, detached heads for lathes, and so on. Specifications: Condition: 100% Brand New Material: Manganese Steel Standard: MT3-B16 Number of Products: 1 Piece Color: Silver + Black Size: Maximum Diameter: 15.733Lonvre