The Matthews Centipede Wheels set offers smooth dolly track shots for camera dollies of 34" width or less. Each truck consists of 8 wheels, for a total of 32 per set. The Centipede is equipped with staggeRED wheels (back wheels are larger than the front set), allowing for easier turning and braking. Capable of supporting weights up to 1500 lbs., the wheels are designed to work on old tracks as well as modern precision track systems using 1.5" diameter rails.