Experience ultimate power in a single lightweight multifunctional drill featuring a quick action drill chuck with auto lock for one hand tool change electronic speed selection a 2 speed gearbox for efficient working and right left rotation with all these fatures packed into one device you can rest assured that you can deal with every task no matter how tough the psb 850 2 re has an insulated aluminum housing softgrip with improved ergonomics and bosch electronic controls for stepless