Features:brand new and high qualityWidely used on surfing, skiing, skateboarding, riding bicycles/motorcycle.Easily secure your camera to connect extension arm at the same-time as you record to a different angle by the moment.The new curved design ismore greatly reduce wind resistances when riding and improve shooting stability.Made of aluminum alloy material, light weight and durable.Suitable for HeroSeries action cameras. Specifications:Material:Aluminium AlloySize:Approx.76x15x15mm/3x0.59x0.59inches Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x Extension Arm