Features: brand new and high quality Mouse Upper Motherboard Micro Switch Button for Key Board, Plastic material. TTC yellow core encoder (commonly known as Golden Wheel): the scale is very clear, slightly hard, high rolling accuracy, crisp when rotating (slightly loud), more suitable for game cutting guns, with a service life of 48 million grids. Om ron D2FC-F-K 50m blue dot: the original model before GPW generation 1 is also close to the original 7n G1 white dot of GPX generation 2. It has moderate strength, slightly crisp, high cost performance, uniform strength, slightly rapid rebound and a service life of 50 million. The new kailh for GM 8.0 Black Mam ba has a service life of 80 million times (current service life), moderate strength, crisp feeling, short stroke and millimeter trigger. The rebound is very compact and rapid, with less lag. New TTC dustproof gold 80 million times: it can be suitable for dusty environment. It has a full sense of brittleness, short stroke, very compact and rapid rebound, and a conservative service life of 80 million times. It defaults to sending a slightly hard and very brittle batch. Specifications: Type: Mouse Upper Motherboard Micro Switch Button for Key Board Material: plastic Quantity: 1PC Packing Size：approx. 10x10cm/3.94x3.94in Compatible models:for G Pro X Superligt Gaming Mouse Type:A：Kailh Micro Switch yellow core encoder，B：50M Micro Switch white core encoder，C：Without Micro Switch yellow core encoder，D：TTC gold Micro Switch yellow core encoder(optional) Package Includes: 1PC x Micro Switch Button note: Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!