Brand BZ Model BZ66-II Quantity 1 piece(s) Material Plastic + stainless steel Color Black Type Gadget Function The Gopro camera mounting rail rail is suitable for all kinds of diameter of 3.5cm~6.35cm Power Supply No Working Current No Other Features The Gopro camera mounting rail rail is suitable for all kinds of diameter of 3.5cm-6.35cm. A motorcycle frame bumper ski / board frame or any other applicable range of horizontal bar. Compatible with all Gopro Hero3 Hero2 HD Hero original camera. Portable weighing about 980G digital products testing can endure 160km/ high speed after the emergency stop can be directly connected to GoPro machine more convenient accurate positioning more than the official GoPro bayonet lock accessories with high strength plastic pad with extended stainless steel lock screw lock is strong Packing List 1 x Large diameter holder 1 x Long screw support