1).Diameter: 65MM;

2).Wheel thickness: 29MM;

3).A set of 4 (left front wheel, right front wheel, left rear wheel, right rear wheel).

4)Interface selection:

a. 3MM coupling interface (adapted to N20 motor);

b. 4MM coupling interface (adapt to GA25-370 motor);

c. 5MM coupling interface (for 42 stepper motors);

d. 5.3MM coupling interface (suitable for TT DC motor);

e. 6MM coupling interface;

f. 8MM coupling interface.”