Features: brand new and high quality Adhesive fixation on both sides of the helmet: as stable as a bumpy road Double wings move 180 degrees, specially designed for motocross Suitable for all helmets including rally helmets and other professional helmets Quick release structure, convenient for camera installation/removal Pass one end of the rope through the for gap of the bracket, and stick the safety buckle in a suitable position. Specifications: Material:ABS Length: Approx. 170mm/6.69inch Size 1: Approx.68x34x68x28mm/2.68x1.34x2.68x1.1inch Size 2: Approx. 60x27mm/2.36x1.06inch Size 3: Approx.40x30mm/1.57x1.18inch Note: 1.Please allow 1-2mm 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: 1 Set Cellphone Holder