Brushless motor provides better performance, a longer lifespan, and less maintenance than brushed alternatives 3-position detachable auxiliary handle can be installed on the right side, left side, or the top of the angle grinder 4.0 amp-hour lithium-ion battery with onboard LED charge gauge delivers consistent power at any charge level, and is compatible with the entire WEN 20V Max Cordless Power Tool series - 5/8"-11 spindle accepts the majority of 4.5-inch grinding wheels on the market Includes a 4-1/2-inch 30-grit grinding wheel, a spindle lock, a lock-on power switch, a tool-free quick-adjust wheel guard, a 2-amp battery charger, and a two-year warranty