These are screws that came out after disassembling and taking apart a PC. I am a novice, so I cannot answer questions about which screws correspond to which parts. The entire set in the image: 2,200 yen Individual screws: 1st screw: 500 yen 2nd and subsequent screws: +120 yen each The images show everything, so please purchase only if you can make a judgment based on the images. I cannot provide any warranty if the product is damaged or if the screws do not fit properly.