The high rotational speed of 20000rpm allows it to provide fast materials removal speeds. Highly speed, highly efficiency with low noise, and fine durability The housing have holes for high heat dissipation to cool the operating mechanism from overheating Single handed operate and side switches for easy grasping and use Removable covers, effective and debris can connection to the vacuum equipment The thickened baffles design reduces splashes of workpiece debris into machine, making the operate process safe, Manufacturer: JTQYFI