Feature 1Made of high quality plastic material, sturdy and durable for long term use. 2All Elite greenhouses now use these wheels. 3Complete with bolts and nuts, convenient and piratical to use. 4The diameter of the wheels is about 30mm. 5Perfect replacement for the old or broken one. SpecificationFeatures: Made of high quality plastic material, sturdy and durable for long term use. All Elite greenhouses now use these wheels. Complete with bolts and nuts, convenient and piratical to use. The diameter of the wheels is about 30mm. Perfect replacement for the old or broken one. Specification: Material: Plastic Diameter: Approx. 30mm / 1.18 inch Package list: 2 * Wheel 2 * Nut 2 * Bolt 2 * Gasket When shopping, please pay attention to the size and dimensions of the product to ensure that it meets your needs. In the title and , we have provided detailed information about the product, including its features and specifications We want you to be completely satisfied with your purchase, so if you have any questions or concerns, please don't hesitate to contact us. We are here to help and will do our best to assist you. Thank you for choosing our product. We hope you enjoy it!