The very special thing about the Keygeek Cyan switches is that both the top and bottom housing come polished out of factory. Not only the exteriors are polished, more importantly, the interior of the housing and the bottom housing rails are also polished. The reason to do such a thing is to decrease the overall surface friction, and they won't rely on factory lubing too much to ensure its smoothness.   1 quantity = 10 switches Switch Type: Linear Manufacturer: Keygeek New top housing mold Stem material: L4 POM Mold: New top housing mold Top Housing: Polished PC Bottom Housing: Polished PA6 Operating Force: 42±2g Bottom-out Force: 52±2g Pre-travel: 2.0mm Total Travel: 3.6±0.2mm Spring: KOS 20mm single-stage extended Factory Lubed: Yes! mixed GPL105&GPL205 on leaf spring, stem feet, and bottom housing rails.