1Made of high quality stainless steel, these screws are durable and rustresistant. 210 kinds of selftapping small screws assortment kit, M1, M2, M4, M7 are available. 3Total 1000 pieces of screws and you can use them for quite a long time. 4Well packed and assorted in a plastic box, don't have to worry about damage or disorder. 5Great for watches, glasses, electronics or anything else repair that requires small screws.