Learning Resources STEM Explorers Marble Runners - Skill Learning: STEM - 5-10 Year 2190 With a diameter of 1/2

With a diameter of 1/2 inch and an extensive 50-foot length

the roller offers a secure fit

of wood BBQ pellets

The convenient screw-on mechanism allows for easy access while maintaining an airtight seal to preserve the freshness and integrity of your materials

Learning Resources STEM Explorers Marble Runners - Skill Learning: STEM - 5-10 Year 2190 With a diameter of 1/2Unleash creativity and inspire hours of fun with this dynamic marble run set. Perfect for both children and adults, this engaging set challenges you to build intricate designs, fostering problem solving skills and imagination. With countless possibilities, each piece fits seamlessly to ensure a smooth and thrilling ride for your marbles as they twist and turn through your custom created course.