Features: Aluminum alloy 3/8-16 extension rod, with 6mm hole in middle part for tool fixing, and 3/8 female screw holes at both ends, comes with 3/8 male screw. The bottom is a 3/8 threaded internal thread interfaces, and the top is a 3/8 threaded external thread interfaces, with a diameter of 15mm. Quality aluminum alloy material, light weight, long service time. Can be used for products with 3/8 threaded interfaces, such as tripods, selfie sticks, DSLR cameras, surveillances cameras, camping lights, etc. Widely used in live streaming, video recording, radio recording and more. Specifications: Material: Aluminum alloy Length: approx. 80mm/3.15inch Diameter: 15mm/0.59inch Name: 3/8 female to 3/8 male aluminum alloy extension rod Package Includes: 1 Piece 3/8 Female to 3/8 Male Connecting Rod 1 Piece 3/8 Male External Screw note: It can be a 3/8 female to female extension rod with external male threaded screw, or a 3/8 female to male extension rod. Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.