kit composed by :
10 red reducers 0.25 L/min
10 orange reducers 0.50 L/min
10 white reducers 0.80 L/min
10 light blue reducers 1.00 L/min
10 dark brown reducers 1.20 L/min
10 light brown reducers 1.50 L/min
10 yellow reducers 2.50 L/min
10 green reducers 3.00 L/min
10 black reducers 5.00 L/min
10 blue reducers 8.00 L/min