OVJ STEM Rubber Wheel & Axel Set

This set includes four durable black rubber wheels, each measuring 40mm in diameter with a 3mm mounting hole, paired with two 100mm silver metal axles. The wheels feature a five-spoke hub design and a treaded surface, providing both aesthetic appeal and functional traction. Designed for classroom or makerspace use, these components are ideal for student projects involving motion, structure, and basic engineering.

These wheels and axles work well for cardboard vehicles, marble-run mechanisms, or robotics prototypes. The standard 3mm bore and 100mm axle length allow for easy integration into lightweight DIY constructions, especially those focused on movement and mechanical design.

This set supports hands-on exploration in mechanics, axle fitting, and transport design, making it a strong choice for students learning through building, testing, and modifying.