Non-threaded Round SpacersThe HEAO three-D Round Spacers are a fantastic answer for creating sturdy standoffs/spacing’s for your projects.Because the spacer has an M3/M4/M5/M6/M8 ID this retains the screw snug and centered. These spacers can be used in all types of builds comparable to 3-D printers, CNC machines, Robotics, Measuring equipment and instrumentation as well as Other Machinery.We use the spacers to create an area between the stepper motor and the motor mounting plate. This permits for room to mount hardware comparable to couplers and belt pulleys to the motor shaft.They are manufactured from wonderful Aluminium to supply you with an enduring product.Large quantity could be customized,direct gross sales from the manufacturer!