Aluminum Metal Lanyard Lens Ring Mount + Screwdriver for Gopro Hero 3 Aluminum Lanyard Ring Len Mount W/screwdriver For Gopro HD Hero 3 Aluminum LANYARD Lens RING Mount +Screwdriver For GoPro Go Pro Hero 3 Lens Replacement Kit (Aluminum Lanyard Ring Mount & Screwdriver) for Gopro Features: 1. New and quality guaranteed 2. Aluminum CNC mechined 3. Scratch resistance 4. Lightweight construction 5. Ideally fit for Gopro Hero Specifications: 1. Weight: 2.05 oz / 58 g 2. Dimensions: (0.97 x 1.57 x 0.16)" / (5 x 4 x 0.4) cm (L x W x H) 3. Material: Aluminum 4. Compatible with: HERO3 5. Color:Green Package includes: 1 x Aluminum Lanyard Ring Mount for GoPro Hero 3 1 x Screwdriver