Description
Lost your marbles? Four Brothers offers round, high quality and durable replacement chromium steel balls designed for the innovative and fun STEM marble run toy GRAVITRAX, requiring 1/2 inch balls. While these balls are designed to replace the popular GRAVITRAX toy, they will also support other games that require a 1/2 inch steel ball. Chromium steel is designed with maximum engineering properties that allow for sleek and lustrous appearance in a gray metal. Never search again, as these replacement balls are known for their incredible resistance to corrosion and hardness resulting in a long-lasting product.
Features
- REPLACEMENT BALLS- 20 pack of high quality chromium steel balls designed to replace lost balls for the innovative marble run and STEM toy GRAVITRAX.
- CHROMIUM STEEL- Material is made out of durable, hard gray metal.
- ENGINEERED DESIGN- The High Quality metal's engineered properties allow for a polished shiny long-lasting appearance.
- DURABILITY- GRAVITRAX replacement steel balls are known for their incredible resistance to corrosion and hardness.
- SIZE- Suited for brands requiring a 1/2 inch metal ball including the popular GRAVITRAX STEM toy.