Integral battery state of charge indicator for convenient monitoring of battery charge levels. Powerful high-performance motor provides 9000 RPM for aggressive applications. Cast metal gear housing dissipates heat during extended periods of use. 3-Position handle for comfort and control. Lock-on switch for reduced fatigue during extended use. https://www.industrywaala.com/product/stanley-scg400-b1-9000-rpm-cordless-brushed-grinder