Features Precision Machining: Add a gasket between the slider and the synchronous wheel, isolate it by 1mm, and lock it. The unpowered spindle is precisely machined by a grinder with an accuracy of 0.005mm. Unique Design: Stable rotation, no mutual grinding, good precision. Synchronous wheel locking design, no grinding during work, high precision and long service life. Easy to Use: M10 bushings can withstand greater torque, complete with unpowered spindle accessories, easy to use, and can meet different needs. Equipped with three-jaw drill chuck, the clamping is more stable and not easy to fall off. Wide Application: Can be used for DIY table drill, table grinder, table saw. And so on. It can work with 4-inch grinding wheel, cutting saw blade, etc. ​​​Service: We strive to provide you with high-quality and convenient services. If you have any questions about our products, you are welcome to contact us and we will give you a satisfactory answer. Features:  1.The gasket is added between the slider and the synchronous wheel, isolating of 1mm to lock tightly. 2.Smooth rotation, no mutual grinding, good accuracy. 3.This unpowered spindle is precision machined by grinding machine with an accuracy of 0.005mm. 4.Can be used to DIY bench drills, bench mills, table saws. etc. 5.Can work with 4 inch grinding wheel, cutting saw blade, etc. Specification: Material: Steel Package list: 1 * Connecting Rod 1 * XL20 Tooth Synchronization Wheel 1 * Slider 1 * Gasket 2 * Bearing 2 * Hex Wrench 1 * B16 Drill Chuck Set 2 * Screw Sleeve 2 * Big Wrench 1 * M10 Shaft Sleeve  Package List