- Thermal overload protection: protects the battery if the temperature is too high; - Current overload protection: disconnects tool to protect against overloads; - Individual cell monitoring: protects cells against overcharging; - On-board battery charge indicator allows the user to maximize battery efficiency.
- Rectified four-sided hard metal tip; - Super deep double groove; - Reduced groove; - Vanadium chrome steel body; - The coolant should always be used.