Thank you for viewing. This is a listing for 4 Omron D2FC-F-7N(60M) mouse replacement switches. Please make sure your mouse is compatible before purchasing. These are high-durability switches that can withstand 60 million clicks, which is six times the lifespan of a typical mouse switch, saving you the trouble of repeated soldering. If you wish, I can include a copy of the manufacturer's invoice with personal information masked as proof of authenticity. I am unable to offer discounts. Thank you for your understanding.