The 18V STANLEY FATMAX V20 Cordless Random Orbit Sander with 1 x 4.0Ah Lithium Ion Battery and Soft Bag features new and improved battery technology, with no memory effect and minimal self-discharge. With a powerful motor delivering 12,000 OPM for fast material removal, you can effectively and efficiently sand surfaces with ease. The Sander features a high-performance dust collection system to control dust accumulation through an integral dust bag or connect to a vacuum hose for hassle-free dust extraction. Its lightweight and low-profile design also provides additional control and reduced vibration during use. Part of the new 18V STANLEY FATMAX V20 Cordless System - power all your V20 tools with a common new and improved 18V Lithium Ion battery for longer runtime and power to get the job done.