A compatible 12 tooth metal bevel gear that fits Lego Technic that offers substantial improvement in torque and speeds over standard plastic gears. Perfect for improving strength and reliability in differentials. Adjustable grip design to give the perfect amount of grip on the axles - simply gently push a punch or nail/pin into the small hole on the back and move around to increase the 'grip' or friction on the axle. No differential included.
Check out the testing videos below!