A sheet sander utilizes a back and forth motion combined with a swirling motion..

 Mouse sander  Model: QD6301

Parameter: Input power 135W   

                        Voltage/Frequency: 230-240V/50HZ

                        No load speed:12000rpm/min

                        Eccentricity: 1mm

                        Tool weight:1.4KG

  Property:  Soft grip: Yes

                        Constant speed: Yes

                        Foot: Plastic

                        Paper attachment: Clamp

                        Self dust collecting: NO