aluminum alloy, lightweight and with long time use Widely used for live streaming, video radio and more Aluminum alloy 3/8 female male screw extension rod, available in two lengths Can use for products with 3/8 screw interfaces such as tripods, selfie sticks, DSLR cameras, camping lights The bottom is 3/8 screw female interfaces, and the top is 3/8 screw male interfaces with a diameter of 15mm