Makita DBO381 LXT Finishing Sander comes with built in dust extraction system. 3-stage electronic speed control and constant speed control allow you to precisely control your work, providing better end results. A large rubberised clamping lever allows for quick and easy paper installation. Its ergonomic rubberised grip and handle provided added user comfort. The front grip is detachable without tools for corner sanding. A battery protection system automatically shuts off power when the battery level is low Compatible with the Auto-Start Wireless System (AWS) , connects to compatible dust extractors with Bluetooth. The dust extractor automatically runs while the switch is on. Comes as a Bare Unit, NO battery or charger supplied. Specifications: Oscillating Speed: 0-12, 000/min. Sanding Orbit Diameter: 2.0mm. Sanding Pad Dimensions: 92 x 185mm. Dimensions of Clamped Abrasive Sheet: 93 x 228mm. Vacuum Cleaner Connection in/out: 17/22mm. Technical Specs Oscillating Speed: 0-12, 000/