HSU GoPro Adjustable Aluminum Arm Joints Mount (Blue)Adjustable 3 Way Pivot Arm Assembly Extension Adapter Mount +Same Direction Straight Joints Mount+ Thumb Knobs for HERO 12, HERO 11, HERO 10, HERO 9, HERO 8, HERO(2018), HERO 7,6,5 Black, HERO4, HERO3+, HERO3, HERO2, Go Pro Session, DJI Osmo Action, AKASO, Campark, YI Action Camera and More The Go Pro extension arm are made of high quality aluminum alloy, rustproof, rugged, and durable Action cameras Accessories Kit Extension Arm Adapter Pivot Arm