Description Magnetic Desig: Magnets on both sides, it can fit the body better when there is no need to folding fingers. Material: Made of high quality aluminum alloy, durable and wear resistant. Easy To Use: Equipped with small tools for removal and installation Fitment: Suitable for: Hero10/9/8/Max Action Camera 1/4 Screw Hole: Dual Interface Design, for straightly mounting for Go Pro and selfie stick tripod accessories. Universal screw hole makes it possible to mount both the camera and selfie stick or tripod accessories, more extend functions. Specification: Material: Aluminum Alloy Size Chart: 42MM/1.65inch Package Includes: 1 Piece Dual interface base 6 Piece Screw 1 Piece Screwdriver Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful online shopping!