Feature:1. Three-jaw drill chuck is more stable and not easy to fall off.2. M10 shaft sleeve can withstand more torsion.3. The synchronous wheel is locked tightly to lock the sliding block position.4. Double flange bearings runs more smoothly.5. High accuracy,works more fluently and more stable.Specification:Item Type:Unpowered SpindleDrill Chuck: JTOClamping Range: 3~4mmBushing: M10Connecting Rod: M10Accuracy: 0.005mmMatching Bearing: F6800ZSynchronous Wheel: XL20 Tooth.w-e-text table td,.w-e-text table th,;.w-e-text table,Package List:1 x Drill Chuck1 x Drill Chuck Key2 x Bearing1 x Black Washer1 x Slide Block1 x Synchronizing Wheel2 x Hex Wrench1 x Connecting Rod2 x Large Wrench1 x Black Screw1 x Shaft Sleeve(2 x Chuck Sheet / 1 x Sleeve)