Wooden Wheels - 4 cm, Pack of 100Unleash creativity and engineering exploration with this pack of 100 varnished wooden wheels. Each wheel measures 4cm in diameter and 1cm in thickness, with a central hole of 0. 4cm perfect for inserting axles and supporting rotation in student built projects. These wheels offer the foundation for countless classroom experiments, model building, and inquiry based learning tasks. Whether testing vehicle speed, examining weight distribution, or