1-For Professional purpose use. FFU good. 2- Professional motor with 180celsz degree copper wire, Silver-copper commutator, DW600 lamination steel. 3- Unique foldable long handle to save space when carrying and transportation. 4- Variable speed 600-1500rpm 5- Soft grip for comforatable operation. 6- Flexible sanding pad for convenient operation on different walls. 7- Realize convenient sanding by the flexible handle. 8- With dust tube and Variable vacumm power for different walls operation. 9-With 10W LED lights surrounding the pads with 3cm distance to the working surface to lighten up the working surfaces.