kit composed by :
10 green reducers 0.25 L/min
10 yellow reducers 0.35 L/min
10 red reducers 0.50 L/min
10 neutral colour reducers 1.20 L/min
10 white reducers 2.00 L/min
10 orange reducers 2.50 L/min
10 grey reducers 4.70 L/min
10 black reducers 5.50 L/min