All-terrain wheel with bushing (for protection of motor bearings) for the Ambrogio L15/20 robotic lawnmower. These wheels are slightly larger than the regular wheels, but due to the ability of the spikes to dig into the ground, the effective circumference is virtually the same.
With these wheels, you will usually have (much) better grip on the grass, and your lawn will be less visibly flattened, but you may need to put some rubber on the charging station to give it enough grip.
The wheels are 3D printed.
The price is for a set of 2 wheels.