Precision craftsmanship! These Screw Petal Nuts have a flat head and a professional install tool and nut fastener to fix them; This is very easy to install and fits different sizes with different thicknesses. The teeth cut deep into the material, ensuring a secure and tear-resistant grip of the wall anchor and screw set. The large teeth are designed to hold firmly in the plaster and can hold objects up to 50 pounds. This set can be easily used by hand for easy mirror replacement or maintenance, the long arm is labor-saving, and the soft rubber handle provides a comfortable experience without unnecessary hassle. Screw Petal Nuts are made of carbon steel, strong resistance to rust and corrosion for long time use; Zinc plating helps prevent surface damage and discoloration, with anti-oxidation, healthy and lead-free, high-strength, non-deformable, load teeth. Screw Petal Nuts are widely used in automotive, furniture, decoration and other electrical and industrial products. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.