Compatible with Streamlight Stinger, PolyStinger, and UltraStinger; fits xenon models only Not for XT models; Fits xenon models only, not for LED models Easy to install and replace wth the right tools; Features a durable and reliable switch Allows for easy on/off operation of flashlight Enhances the functionality of your Streamlight Stinger flashlight Please Note: Special tools required for installation (a Phillips screwdriver, large needle nose pliers or snap ring pliers, and a 0.9" diameter wooden dowel or pipe)