The NTC2 U-shape tail cap is designed to prevent the flashlight from turning on accidentally while in a holster or pocket. The raised parapets along the rim of the tail cap protect the tail switch like guardrails over a cliff face. Additionally, the raised portions now provide the ability to tail stand your wonderful iSeries flashlight for moments of reprieve as well as providing a durable anchor point for lanyard loupes. The NTC2i is made from a durable aero grade aluminum alloy for all of Nitecore's iSeries flashlights. An excellent addition to take your tactical light to the next level.