You can easily adjust the covers without having to use a tool.The housing have holes for high heat dissipation to cool the operating mechanism from overheating The thickened baffle designs reduces splashes of workpiece debris into the machine, making the operating process safe and effectively extending the lifespans of the machine The handle is human engineered with single handed operating and side switches for easy grasping and use.Easily swaps grinding discs with a human-designed spindle The high rotational speed of 20000rpm allows it to provide fast materials removal speeds, saving time and effort and ensuring productive work.High speed, high efficiency with low noise, and fine durability Removable covers, effective and debris, can connection to the vacuum equipment, Manufacturer: Kaeltsyn