VIAHART Brain Flakes 16 Wheels and 8 Axles Tube-Go Set Add-On Travel Kit - Build Cars, Trucks, Anything That Spins - Compatible with Brain Flakes Brand Discs - A Great STEM Toy

Includes 16 wheels and 8 axles which connect with Brain Flakes interconnecting discs and a durable plastic tube for easy storage ; No instruction booklet is included but instructions are available online for free ; Wheels, axles, and discs easily click together for ages 5+ with some children as young as 3 having no problems Child safe ; BPA, lead, heavy metal, and phthalate free ; Compliant with ASTM US CPSIA safety regulations Develops spatial intelligence and thinking ; A great solo or collaborative group activity for school classrooms, makerspaces, montessori, daycares, libraries, or home ; Countless design possibilities and hours of skill building play ; Engineers Start Here Size and weight ; Product measures 2.75 x 2.75 x 8 in inches ; 7 x 7 x 20.3 in centimeters ; Product weighs approximately 0.34 pounds or 0.15 kilograms ; Wheels measure 1.55 inches or 3.94 cm across and are 0.5 inches or 1.27 cm wide ; Axles are 3.78 inches or 9.6 cm long and 0.58 inches or 14.75 cm wide Manufacturer warranty ; 90 day manufacturer warranty for all manufacturer's defects, Manufacturer: VIAHART