Style of socket retention: C ring Electric brake stops rotation gently yet quickly for fast resumption. Convenient reversing switch. Reverse Rotation Auto Stop Mode halts once bolt/nut is sufficiently loosened. Ergonomic handle with rubberized soft grip. XPT (eXtreme Protection Technology) enhances dust and drip protection for outdoor/harsh environments. BL motor (brushless) runs cooler, more efficiently, with longer life. BL motor electronically optimizes battery use for longer run time per charge. Powered by 40V max XGT Li-Ion battery. Compact design with a short overall length of 144 mm. Excellent performance in continuous heavy duty applications. Phosphorescent bumper glows blue in dark. Durable reversible belt clip for easy temporary hanging. Battery protection circuit guards against overloading, over-discharging and over-heating. Tool only (battery and charger not included).