Features:1. 100% brand new high quality right steel connecting shaft rod, strictly full tested to ensure the best quality before shipment, safe to use2. This CNC tool is made of 45# steel, which can be used with confidence, durable for long service life3. High accuracy and high hardness of this steel connecting shaft rod makes itself getting popular. For easy disassembly, drill chuck connecting rod can be connected to the machine tool via connecting the taper hole drill chuck4. Through simple operation, the steel connecting shaft rod can work as the CNC tool for drilling, turning and milling5. With pratical adoptability, drill chuck arbor's high quality can keep its high performance for a long time, and it is durableSpecification:Item Type: Drill chuck connecting rodHardness: HRC-55Material: 45# steelAccuracy: ≤0.003Package List:1 x Connecting Rod