Three push button speed settings 4,000, 7,000, and 10,000 allows for sanding, compounding and polishing; No exhaust air, no airborne oil, no blowing of dust and particles; The DC current renders the tool shock hazard free and totally safe to use, the 20′ low voltage DC cable allows use around vehicles and in industrial fabrication and assembly areas; Air sanders only maintain 60% of their speed under load, while the AIRCAT DC Electric Sander maintains 85% of its speed under load; 80% energy savings compared to running a compressor to power an air sander; Comes with backing pad, 4 ply 100% wool twisted 6″ polish sponge