This dimmer slide switch will plug into and work with all our tail caps that came with the 2 mode wired eliminator switch for all our 30LR, 38LRX, 50LR, 50LRX, 66LR and 66LRX lights. This will not work with our discontinued Destroyer lights or any other lights. If you don't have the tail cap for this dimmer slide switch to plug into, you can add it in the options above for $9.00. Has it's own on/off button that will allow you to turn the light on/off at any power. This means if you wa