4 Pack 60mm Diameter Wheel with Silicone Tire, 8mm Wide, Fits FiTec FS90R Servo Motor You can quickly shift gears

You can quickly shift gears from low speed and high torque to high speed and low torque by popping open the innovative gearbox housed in an easily accessible central powertrain unit

and rocket demonstrations

commonly used switches

1/8" cone replacement soldering iron tip

4 Pack 60mm Diameter Wheel with Silicone Tire, 8mm Wide, Fits FiTec FS90R Servo Motor You can quickly shift gears4 Pack 60mm (2. 36") Diameter Wheel with Silicone Tire, 8mm Wide Hub features a tooth pattern that fits the FiTec FS90R Servo Motor gear shaft Each wheel has two additional mounting holes for 3 40 screws for alternate mounting options Each tire weighs about 0. 40 ounce Ideal for robotics projects, remote controlled cars or trucks, and other DIY toys and models