This listing includes 10 chuck shafts, part number B247-3345.These components are compatible with models 1060, 1075, 2051, 2060, 2075, 6000, 7000, 8000, 6001, 7001, 8001, 5500, 6500, 7500, and 6002.The shafts are designed to fit these specified units and restore functionality.