The device is powered by a strong 1500 w motor works with a power of 13 joules and weighs only 85 kilograms an integrated service display with pre flow indicates when the carbon brushes have to be changed the optimized power to weight ratio ensures that the gsh 7 vc professional relieves the artisan from tiring work such as horizontal chiselling or chiseling overhead the vibration damping also contributes to the high comfort of the device the sds max tool holder also ensures optimum force