Pro. Air Random Orbital Palm Sander Kit; Oil Free Self-generated Vacuum; speed:12000 rpmPad Dia.:6"; Air Cons : 6.7cfmHook Face Pad; Orbital Dia. : 5mmWith Hose & Dust Bag New Technology Rubbing Compound.The air consumption of all our sanders is about 160 Lmin, comparing with others whose air consumption, in general, is 240 390 Lmin, our sanders will save you the cost of the electricity for the compressors. Due to our sanders are very smooth when using, comparing with others whose utility rate of the sanding paper is about 35% 40%, ours is 95%. You may save the cost of the sanding paper.With very low vibration, it's very suitable for the users frequently for a long time operating. Very few dust caused when using all of our sanders, no matter it's OIL FREE or the normal one.