MAXROCK [Stem Cap Bike Holder] (TM) 360 Rotation Universal Cycling Holders with Super Light 65g Aluminium Alloy Material Compatible for All Bike with Stem Cap Smart compact design for CellPhones, GPS,Radio... totally aluminum alloy and Nylon carbon-fiber material , providing secure and sturdy support for cycling trip Snap and trail clipboard design, One touch or slide easy to put in or out your cellphones, GPS from your roadbike, 10000times test for the carbon fiber snap, firmly protect your phone, GPS devices, Radio Adopted CNC Exquisite craftsmanship, make mount match your bike perfectly. High quality anodizing technique, classic black color, anti-scratch, anti-rust ensure your mount fresh as new all the time 360 rotation adjustable angles any angle view available, easy for the video record and GPS instructionTwo choices with 2 pcs clipboards backup, you could bonded to the devices you need or the phone cases (waterproof or anti-broke )you needyou also could buy the clipboard as backup ones Package: mount lever*1, stem cap*1, easy wrench*1 , 3M clipboard*1 , ,50mm Bolt*1