Features: Gateron Switches have quickly become one of the most sought after names in the keyboard community. Gateron Switches use copper click leafs and softer plastic stems, making for an unparalleled, smooth typing experience. Gateron produces a secure fit for any keycaps and all stems are for MX housing, letting you pick from the wide variety of available keycaps. It can support SMD optical keyboard,such as SK61 /SK64 /X-bow Nature Knight . This optical switches can'for t interchange for mechanical MX switches.Such as GK61 GK64 can'for t use it.The bottom is different structure. Specifications: Material: ABS Color:black green tea red silver blue yellow Package Includes: 1pack x OUTEMU Gaote Switch note: No retail package. 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!