The package includes: M3 (25pcs), M4 (25pcs), M5 (20pcs), M6 (10pcs), M8 (10pcs), M10 (6pcs), M12 (4pcs); 7 sizes to meet your different needs. Material: Made of high quality stainless steel, corrosion resistant, strong and durable. Application: Wing nuts are suitable for machinery and equipment, electronic equipment, communication equipment, hardware lighting, building bridges, furniture decoration, etc. Easy to use: They are easy to install, twist the nut by hand without any other tools. The head is in the shape of a wing, which is very nice. It is ideal for applications that require regular tightening or removal. Packaged in a plastic box: organized by size in a transparent storage case for a quick access and protection. Number of pieces delivered: 100