The gateron oil king switch is one of Gateron’s premium linear mechanical keyboard switches, offering a self lubricating design for a smooth and thoccy typing experience for your custom mechanical keyboard The Oil King switch incorporates a long 20mm black plated spring allowing for 55g actuation and 80g bottom-out weight Compatible with 5-Pin MX mechanical (hot-swappable) keyboards with 2-Pin LED/4-Pin LED, or RGB-SMD lights that are not raised. The Oil King switch is the newest mechanical linear switch that features a Nylon PA66 upper housing, a housing base made of secret black Ink housing material, and a POM stem. The stem in the upper housing is fantastic with ultra-stability and almost no wobbliness. Compared to CJs, it has a deeper patch sound.