1)Motor assembled on sander's head with good sealing ensure durable use, and good balance for motor and auto-vacuum system, easy to operate
2)Sanding pad: moving much more steady,
3)Sanding head can adjust in big degree 0-120
4)With big support handle,extend bar, telescopic
5)Varible speed
6) soft grip, comfortable for work
7)no need vacuum cleaner
8)Length 110-180cm With extension bar