STEM Inventions Large Plastic Wheels & Axles for Mousetrap & Rubber Band Cars – 20 Wheels, 20 Bands, 10 Dowels

Product overview

Stimulate hands-on learning with the STEM Inventions Large Plastic Toy Project Wheels and Axles set. Sized for classroom and home experiments, these parts are designed for rubber band-powered vehicles and mousetrap cars, offering reliable, repeatable motion without relying on fragile or hard-to-find components.

Designed for curiosity and practical problem solving, the set helps students and hobbyists explore concepts like traction, gearing, and alignment. The durable polypropylene construction is built to withstand repeated tests and playful sessions, while remaining safe and recyclable.

Key features

• The wheel axle hole features a four-tooth grip to lock the 1/4-inch dowels in place, helping prevent slippage during launches and tests.
• Rubber bands add traction to the outer wheel, supporting smoother starts and steadier rolling over varied surfaces.
• Compared with improvised wheels, these pieces fit snugly onto sturdy wooden dowels for reliable alignment and reduced wobble.

Specifications at a glance

• Wheels: 4.75 inches in diameter with a 1/4 inch tread
• Axle hole inner diameter: 1/4 inch
• Dowels: 1/4 inch diameter, 6 inches long
• Rubber bands: 1/8 inch thick, 3.5 inches long
• Material: sturdy polypropylene plastic; reusable and recyclable
• Includes: 20 wheels, 20 rubber bands, 10 dowels; plus extras for experimentation

Real-world use cases

• Build a rubber band car to compare speeds on smooth floors vs. carpeted surfaces
• Assemble a mousetrap-powered vehicle to observe energy transfer and motion efficiency
• Experiment with different wheel-to-dowel fits to learn about alignment, friction, and traction

What you get

• 20 wheels
• 20 rubber bands
• 10 dowels, with extra pieces included

Materials and sustainability

Made from polypropylene, the parts are sturdy, safe for classrooms, and recyclable where facilities exist. They’re designed for repeated use in learning activities and maker projects.

Why choose this set

This kit is designed to support inquiry, experimentation, and iteration. While outcomes depend on variables like surface, weight, and gearing, the parts provide a dependable base for exploring motion concepts in a hands-on way.