Pullback Sport Racing Formula Toy Racing Car - Superb Pack of 4 - Realistic Friction Powered Racer Vehicles - A Must to Try! 4 pieces Pullback Sport Racing Formula Toy Racing Car. Measures 6  inches each and comes in white, red, blue and yellow color. Made from durable material, these set makes a perfect gift for your little boy at his birthday. Easy to play, just pullback the car and release watch the car run across the room. Great to play with siblings and friends for fun racing with them.