Strong power, efficient polishing, eccentric high-frequency vibration, and less prone to stopping due to external resistance, with high efficiency and good performance. Grinding back and forth from left to right with a deviation of 3mm, efficient grinding, more uniform and faster. The replaceable pad is easy to replace to meet different working needs. Equipped with stepless speed control button, the speed and for ce can be adjusted according to different work needs. Portable and compact, easy to carry. With non-slip handle, easy to operate. This straight line air sander is suitable for grinding narrow gaps, irregular workpieces, metal molds, wood decorations, metal jewelry, etc., Manufacturer: Ounfhtrttk