Usage Tips:1、Made of stainless steel material which can provide strength and offers good corrosion resistance in many environments. 2、Great for use as fixing component, industrial and construction fasteners. 3、Well packed and assorted in a transparent plastic box for convenient use and storage. 4、There are several common lengths in this set for general purpose use which will meet daily basic need. 5、Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. Features: Made of stainless steel material which can provide strength and offers good corrosion resistance in many environments. Great for use as fixing component, industrial and construction fasteners. Well packed and assorted in a transparent plastic box for convenient use and storage. There are several common lengths in this set for general purpose use which will meet daily basic need. Used widely in the home and office appliance, communication equipment, ship assembly and other machinery industry. Specification: Material: Stainless steel Type: M3 cross machine screw Size & Quantity: M3*4    30PCS M3*5    30PCS M3*6    30PCS M3*8    30PCS M3*10  30PCS M3*12  30PCS M3 Nuts 90PCS M3 Washers 90PCS Package list: 1 box * Fasteners