Description:1. For Helmet Camera Extention Kit Arm Buckle Curved Mount Holder:Stong nylon made，Come as arm ， QD Buckle ， helmet use curved surface and 3M VHB Adhesive StickyFit gopro Hero 2 and Hero 3 2. Helmet Action Camera Strap: Length: 24cm Suitable for Gopro and SupTig outdoor sport camera; It can be fixed on the helmet， such as bicycle safe hat， ice skating; Even do the strong sports， will not affect its stability;3. Adjustment Long Screw With Cap: Suitable for Gopro 1，2，3 outdoor sports camera; Made of Stainless Steel， and stays unrusted even when it's used in the sea Package Listing: 1 x Curved Mount Holder Arm1 x QD Buckle1 x Curved Surface1 x 3M VHB Adhesive Sticky1 x Strap1 x Adjustment Long Screw With Cap