The Sunex HD new 6¡± palm sanders give you power, control and smooth operation for a great finish every time. With both 3/32¡± and 3/16¡± orbits, you have all the tools you need for both heavy material removal to great finishing and polishing jobs. With the low profile design, you will be closer to the finishing surface allowing for more balance and control of the sanding process. 81 dBA sound level. <2.5 m/s2 of vibration. 3/16 (5.0) Orbit Diameter.