These white plastic wheels have 40mm (1.57 ") diameter silicone tires and fit 3mm D-shaped axles including the micro metal gearmotors and mini plastic gearmotors. These wheels are sold in pairs.
Pololu Wheel 40 × 7mm - white - 2 pcs★★★★★Click a star to leave your reviewWorst experience possibleA bad experienceA moderate experienceA satisfied experienceA very positive experience