The DC411B is compatible with DeWalt's XRP batteries and the older NiCd batteries. 6,500 rpm provides high power for cutting and grinding applications. Convenient trigger switch with lock-off button for easier gripping. 2 Position side handle offers greater comfort and control. Quick-change wheel release provides easier and quicker wheel removal without the need for a wrench. Jam-pot, low profile gear case provides precise gear alignment for a smoother, quieter transmission while allowing access to tight spaces. Batteries and charger sold separately.