Features:These screws are suitable for computer hard disk, keyboard, memory, motherboard, case etc.The screws set is made of high quality stainless steel material, high hardness, corrosion resistance, durable in useThese fasteners feature good fixation, easy to use, practical helper in your Diy assembly processWideapplication, in addition of electronic products, there are also electric, electric, chemical, water conservancy, mechanical equipment, furniture and so onThis package is total of 320 pcs screws, and several different specifications are convenient to meet different situationsSpecification:Material: stainless steelSize: M2*3, M2*412, M2*5, M2*6, M2*8, M2*12, M2*16, M2*20, M2 NutsQuantity: 320Weight: Approx. 81g/2.9ozPackage list:20PCS M2*320PCS M2*420PCS M2*520PCS M2*620PCS M2*820PCS M2*1220PCS M2*1620PCS M2*20160PCS M2 Nuts1 PCS Box