This wheel set is designed for the gearmotors that you used in your robotic projects. The package contains shaft adapters compitable with 3mm and 4mm D type shafts and L type plastic reducers. With this, you can use the wheel with so many gearmotors.
2 x 50x11 mm orange wheel
2 x 3mm D type shaft adapter
2 x 4mm D type shaft adapter
2 x L type plastic reducer compitable shaft adapter
6 x M2x8 phillips screws
6 x M2 nuts
Wheel choices: 3cm, 5cm, 6cm and 7cm diameters; blue, green and orange colors: