AIR 2-HAND Air Random Orbital Sander Self-Genertated Vacuum. Gear transmission for quicker hard sanding, saving time and longer lifespan. Aluminum alloy body housing completely covered with composite materials, robust and no cold feeling during long time usage. Long grip can reduce reaction while sanding. Air adjusting switch for adjusting speed. AIR 2-HAND Air Random Orbital Sander Self-Genertated Vacuum