3D Printed Replacement Bridge For Little Tikes Hot Wheels Adventure Mountain.. Condition is New. Bridge is not smooth and has layer lines, a standard result from 3D printing. **Shade of Red may vary depending on material availability** You are purchasing a 3D printed replacement bridge. It’s printed out of PLA plastic (Polylactic acid or polylactide is a biodegradable thermoplastic aliphatic polyester derived from renewable resources, such as corn starch, tapioca roots, chips or starch, or sugarcane. Wikipedia)