3 Different Sizes Tuning Old Pianos Tools For 5.5mm Pins 5.75 Mm And 6.00 mm
I designed this fast and helpful tool. You can tune your piano if your piano have pins 5.5 mm, 5.75 mm or 6.00 mm. The tool is 8.00 mm thickness, made S355 steel, and you can use a standard 12mm socket.