Features Three-jaw drill chuck is more stable and not easy to fall off. M10 shaft sleeve can withstand more torsion. Double flange bearings runs more smoothly. The synchronous wheel is locked tightly to lock the sliding block position. High accuracy,works more fluently and more stable. Specification:Item Type:Unpowered Spindle Drill Chuck: B12 Bushing: M10 Connecting Rod: M10 Accuracy: 0.005mm Matching Bearing: F6800Z Synchronous Wheel: XL20 Tooth Package List:1 x Drill Clamp1 x Drill Clamp Key2 x Bearing1 x Black Washer1 x Slide Block1 x Synchronizing Wheel1 x Hex Wrench1 x Connecting Rod2 x Large Wrench2 x Black Screw1 x Shaft Sleeve(2 x Chuck Sheet / 1 x Sleeve) Note:Please note that the new type and old type of this product will be sent randomly, and make sure you will not mind before ordering. Package List 1 x Drill Clamp 1 x Drill Clamp Key 2 x Bearing 1 x Black Washer 1 x Slide Block 1 x Synchronizing Wheel 1 x Hex Wrench 1 x Connecting Rod 2 x Large Wrench 2 x Black Screw 1 x Shaft Sleeve(2 x Chuck Sheet / 1 x Sleeve)