A spur gear for a traxxas rc car with 50 teeth. Read instructions !V1.1 did not publish. UPDATE v1.2 model has a solid side added for better printing. UPDATE V1.3 tuned holes for the slipper. UPDATE V1.4 Bearing hole increased diameter by 0.5mm UPDATE V1.5 Fine tuned the teeth the 1.3 model striped out when testing and made more solid for more strength. UPDATE V1.6 made holes bigger and teeth longer. Also went back to the thinner deseign to make the stock screws fit. This is still a work in progress. Thnx for understanding.