Pls note: it is NOT Cherry mx switch.Remark: this is for Mechanical Keyboard, can not fit optical keyboard. Please notice that.for two feet or four feet LED.The switch doesn'for t have the led, you need to install the led by yourself if you want to diy a keyboard.Gateron 5pin switchfor MX based keyboardsmilky switch housingLifetime: 50 million cyclesfor Peak force:Clear-Linear 35gRed-Linear 45gYellow-Linear 50gBlack-Linear 55gBrown- Tactile 45gBlue - Clicky 55gGreen-Clicky 80gMechanical keyboard use cherry mx clone Gateron mx switches.pls note it is NOT Cherry mx switch Milky Switch housing,suitable for LED backlighting shine.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.Note: The switch doesn'for t have the led, you need to install the led by yourself if you want to diy a keyboard.Package includes: (Without retail package)10 x Gateron Milky Red Switches