The drill driver from Bulle operates with a 10.8 Volt battery. It is suitable for both screwing/unscrewing and drilling. Specifically, it can drill holes in wood with a diameter of up to 18 millimeters, steel with a diameter of up to 10 millimeters, and various other building materials. It stands out for its impact function, which offers high power to easily and quickly complete even the most demanding tasks. It has the ability to adjust the rotation speed and operating torque, so it can be set according to the task you want to perform. Typically, lower values are needed for screwing/unscrewing and higher values for drilling into walls or concrete. Its chuck can accommodate drill bits with a base diameter of up to 10 millimeters.