The DEWALT DCS356 20V MAX XR Brushless Cordless Oscillating Multi-Tool is a high-powered tool designed for a variety of tasks in the workshop or garden. With a brushless motor and lithium-ion battery technology, this oscillating tool delivers up to 20000 OPM for precision and efficiency. The keyless chuck size of 7/8 inches allows for easy bit changes, while the variable speed feature provides greater control. This tool is lightweight at 2.6 lbs and backed by a 3-year manufacturer warranty, making it a reliable and versatile addition to any tool collection.