Set of 4 MTNL balls that will transform any ball run to glowing tubes.
Compatible with all big brand ball runs including Connteix and Learn and Grow.
Just remove the plastic sleeve and watch it light up as soon as it hits the tracks. Will stop automatically after 5-10 seconds once the ball stops rolling.
Measure approx 3.3cm, larger than the balls run balls which are 2.5 cm.
WARNING
These balls contain small sized batteries and are a hazard and choking risk for children who place them in their mouth. Strict supervision is required for children who place items in the mouth or are under the age of 4.