5-inch (5") Black Laser Cut Precision Wheels & Tires/Treads (1 Pair). Component is Actobotics and is compatible with 0.770" pattern mount. Wheel disk is precision laser cut from 1/8"-thick black acrylic. Tires are a high-grip rubber and wrap tightly around the wheel. Perfect for FIRST Robotics (FRC) or Science Olympiad events (Mousetrap Vehicle and Gravity Vehicle)!