High quality - The strawberry head screws are made of high quality stainless steel 304. The stainless steel 304 steel material presents and provides good corrosion resistance in a bad environment, such as high temperatures, cold weather and wetlands. They have excellent resistance to rust and oxidation, which can ensure a long lifespan Safety - our strawberry head screws adopt a high quality material, environmental protection and non -toxic. In the use process, there are no toxic substances to be released Precise thread - the thread is very precise and clean. It can make your job easier. Our screws and nuts comply with the normalized metric system Large application - screws and nuts are ideal for professionals and handymen. They also work well for 3D printed projects. The kit is perfect for replacing losses and lost. Usable on sheet metal and wood. A variety of sizes to meet your needs as much as possible Assortment - The kit contains 500pcs screws and 100pcs nuts. Screws in 10