Heavy gauge steel tubing. Front caster wheel. Foot pegs for child’s feet. Speedster front wheels do not touch. Easy installation. Toy Safety Tested and Approved. Chip and rust resistant, child safe, non-toxic powder coating paint. Does NOT fit the 897 Speedster Racers, nor the 891-AP Airplanes. Recommended ages: 1 to 3 years old. Maximum recommended weight 42 lbs. Adult Supervision Required. Some Slight Assembly Required. Shipping Weight & Dimensions 6 lbs.