DescriptionAre you looking for a professional, yet affordable windmill assembly materials? Are you in search of a sturdy, trustworthy tool for school teaching use? If yes, look no further! Our windmill assembly materials, made of material, must meet you needs. It is one of the best choices for you.Features-Color: As shown -Material: Plastic -Size: About 4.50X3.00X0.20cm/1.77X1.18X0.08in - Made of materials, durable and safe for a long time use. - With fine workmanship, not easy to wear and tear, very practical in use. - It is perfect for school teaching or experimental use. - Portable and lightweight, easy to carry. - It has a simple design, but very practical in use.