Features: This is a great set for your home or workplace as it comes with an assortment of sizes in machine screws with the appropriate size hex nuts. Besides, machine screws are used to connect materials in, entering a tapped hole or through the opening r and holding them in place with the nut. Roacute They come in a handy reusable plastic container to suit your needs, making it convenient to take them anywhere. Easy to take and durable to use. Roacute Different sizes to suit your needs. It comes in a handy reusable plastic container. Package List in:(520pcs totally) 20xM3 nut 20xM4 nut Gasket 20xM3 20xM4 gasket 30xround head screw M3x16 30xround head screw M3x12 30xround head screw M3x10 30xround head screw M3x8 30xflat head screw M3x16 30xflat head screw M3x12 30xflat head screw M3x10 30xflat head screw M3x8 20xscrew with flat head flat head M4x12 20xflat head screw M4x8 20xround head screw M4x12 20xround head screw M4x10 20xM3x3 screw 20xM4x4 screw wheel hub stud nuts 20x2x10mm 20x8x4x2mm anti-dumping ring 20xM2.5 E buckle 20xRC body clips Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.