Hitachi SB8V2 9.0 Amp 3-Inch-by-21-Inch Variable Speed Belt Sander with Trigger Lock and Soft Grip Handles Variable speed dial adjusts speed from 820-1,475 ft/min for improved manageability during any operation Soft elastomer grip surface on the main and auxiliary handles for a comfortable and secure hold Tracking window improves visibility of sanding surface and sanding belt during use and belt size is 76 x 533mm(3 x 21 inches) Left-side mounted dust collection bag improves corner sanding applications, while reducing airborne particles to keep work area clean Wear-resistant V-belt drives the sander for double the service life