🤫 The wheels are made of hard steel milled on modern CNC machines.
🎨 New design, relocation of the tappet plate pin/catch - it opens the nozzle much later than regular wheels, which on the contrary open the nozzle too early and there is a loss of performance. Often this problem has to be solved by, for example, adjusting the arm. With these wheels, it is simply not necessary :)
