Our v3 pro switches now feature alloy copper and palladium gold contact, which provide better conductivity, stability, and durability. With dustproof stem and 5-pin, Akko v3 generation silver pro switches are designed to bring a more stable and reliable typing experience. Akko v3 pro 40gf linear silver switches have short pre-travel of 1mm, this is one of the fastest Akko CS switches and is ideal for gaming. Akko CS switches come with MX style structure, making them compatible with most keycap sets with (X) cross stem. Please note that a switch opener is not included. Akko CS key switches are equipped with LED slot ready for LED Mod/Assembly, and are SMD compatible (LED underneath the switch), giving you the flexibility to create a custom keyboard that stands out from the crowd. Akko V3 Generation Pro Switches are engineered for long-lasting performance, with an estimated lifespan of approximately 60 million keystrokes based on rigorous laboratory durability tests. The package includes 45 switches and a plastic tray, designed to keep your switches in optimal condition for extended periods.