It works with an electrical energy of 380 - 440V. It's production can be done from 1m3 to 40m3. Its carriage performance of gripped materials is quite powerful. Will provide maximum efficiency as it will decrease the workforce. Design in a way that it wont danger the human life and will be safe. Afterwards the jaw is closed and the gripped materials are pulled back to the surface with the grab and the grab re-opens in the desired place, thus, the operation will be complete.