Kailh GM 8.0 micro switches for high-performance gaming mice. Purchased in bulk for a lower price, I'm offering them at this price. How about using them to repair your mouse's chattering issues? Shipping costs account for about half of the listing price, so this is practically a loss-leader. Please refrain from price negotiations. Adding one more switch is an additional 309 yen. KAILH GM 8.0 https://kailhswitch.net/products/kailh-gm-8-0-gaming-mouse-micro-switch-80m-life-for-computer-mice-left-right-button I personally repaired the left click of my Logitech M280 using these, so I'm introducing and offering them for sale. For repair instructions, the following is easy to understand for the M280, found through an internet search: Mouse micro switch replacement for chattering repair (Logicool M280 and M557) https://sophie-mercure.blog.jp/archives/25267017.html Other repair examples: Logicool M280, M557 Manufacturer: Kailh Model Name: KAILH GM 8.0 (80 million clicks guaranteed) Size: 12.8*5.8*6.5mm Rated Current: 100mA (A) Quantity: 1 The original switches seem to be Kailh 5M. I replaced them after about a year of use in a work environment when I occasionally felt something was off. With this product, it's simply 16 times longer, or 9 years, so you can use it for the life of your mouse. Replacement Timing Kailh Black 5M (GM 0.5) 225 days Kailh Black 60M (GM 4.0) 7.4 years (estimated) Kailh Black 80M (GM 8.0) 9.9 years (estimated) ★ Please prepare solder wick if needed. If you need it, solder wick is available as an option for an additional 40 yen for about 6cm. Please comment before purchasing. By the way, it takes 2-3 weeks to arrive from Amazon, or about a month. You could buy a new mouse in that time.