Unlimited fuel economy and an ultra-smooth ride! This ZOOBMobile Racer set has 37 ZOOB pieces in special colors designed for building vehicles, 4 wheels with rubber tires that are notched to work like gears, and 2 guides with instructions for nine different model cars. As usual, all the parts are expandable & compatible with all other ZOOB sets. The standard equipment in this set includes 37 ZOOB pieces, 4 high-performance wheels, axles, and tires, the owner's manual with directions for 9 ZOOBMobiles, and a colorful storage box. Includes 37 ZOOB pieces, 4 high-performance wheels, axles, and tires, owner's manual with directions for 9 ZOOBMobiles and a colorful storage box Ages 6 & Up Recommended for 1 or more players, ages 6 and up WARNING: CHOKING HAZARD - Small parts. Not for children under 3 years of age Made in China Imported Product Specifications Package dimensions: 12 in L x 9 in W x 2.75 in H Material & Care Plastic Spot clean only