Vktech Professional Piano Tuning Maintenance 10pcs Tuning Tool Kit with Case professional piano tuning maintenance kit Universal stretch tuning right-angled wrench,length from 270mm to 320mm Portable PU leather case,easy to carry. 2 Pieces rubber wedge mute,85mm length,12mm height,12mm width Hammer,100mm length,45mm width Tone tuning fork,120mm length,18mn width