The vacuum pipe can be connected directly to a dust retraction unit for dustless operation. The motor and protective device are embedded in this machine to make it easier to carry. The advantages of the suction box are: low noise, small size and strong vacuum pipe power, and it is very easy to carry and easy to clean. Specification: Power supply voltage:110V 60HZ ±10% Power :550W rotational speed:3000rpm Dimensions:484132cm Weight:10kg.