Function The motor mandrel adapter set enables a motor spindle extension to become a polisher with a threaded shaft, or a grinder extension shaft to become a polisher with a threaded shaft. Package Includes a sanding disc shaft with sizes 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, and 16mm (optional). Measure your engine rod before purchasing. Application The polishing disc adapter can connect to polishing discs with an inner diameter greater than 10 mm (depending on your choice) and to grinding wheels, fibre discs, and fabric discs. Advantages With this polishing connecting rod you can turn your motor into a grinding and polishing machine. Use scenarios - Finishing and deburring small metal parts such as bolts, brackets, and shafts for a smooth surface. - Surface prep and light polishing on DIY projects involving small components. - Maintenance and refurbishment of tools and discs by enabling mounted polishing work.