The wheels have silicone tires and measure 80 mm (3.15″) in diameter. Two additional mounting holes make it possible to use the wheel with several of our universal mounting hubs. The wheels are sold in pairs.
These black plastic wheels press-fit onto the 3mm D shafts of our mini metal gearmotors, micro metal gearmotors, and 120:1 mini plastic gearmotor to make a nice drive solution for small robots. The wheels have silicone tires and measure 80 mm (3.15″) in diameter. The slots in the six spokes allow additional accessories to be mounted to the wheel (e.g decorations or parts of an encoder system).