Run your robot with this durable and smooth steel ball bearing. We like the size (neither too big nor too small) and the surprisingly smooth movement of this wheel. It is also very easy to attach, with two screw fasteners that will allow you to attach it to any chassis material. Note that it does not come with any mounting hardware, use 4-40 or M3 screws to attach it to what you want.

Fits perfectly with our purple metal frame, but can be used for anything where you want 20mm high.

Features

Wheel diameter: 15.7mm
Overall height: 20mm
Fixed hole diameter (under the running wheel): 3.1mm
Mounting hole diameter: 4mm
Distance of the fixing holes: 40mm
Total weight: 19.7g