Free Speed: 10000RPM. Product Type: Air Random Orbital Sander. Air Sander Size: 21cm x 15cm x 11.5cm/8.27in x 5.91in x 4.53in (L x W x H). Air Sander Weight: 1.02kg/2.25lbs. 1 x Air Sander. ERGONOMIC PALM-SIZE DESIGN: Easy to grip,convenient to operate and can effectively reduce vibration to decrease hand fatigue.