My Campy tools gather dust now😟 Pedal wrench / bottom bracket fixed cup wrench, headset/ bb lock ring wrench, crankarm bolt wrench, crankarm extractor, campy seatpost wrench. In short, many of the tools from back when I could take apart and put my bike together blindfolded, each served a purpose and the system was beautifully integrated. Some day I will have the time to get the “ bible “ on Ultegra Di2 and the tools.