Quad Lock Stem/Handlebar Bike Mount Ring Ring The Quad Lock Bike Mount is the lightest, strongest, and most secure smartphone bike mount on the market. Featuring a patented dual-stage lock, you can ride with confidence over bumps and jumps knowing your smartphone isn't going anywhere your bike isn't, all in a sleek design that fits seamlessly onto the stem or handlebar of your bike. Features Patented dual-stage locking mechanismkeeps your phone mechanically locked through bumps, jumps, and vibrations Quick twist-and-lock attachmentlets you view apps like Strava, Map My Ride, or Apple Maps instantly Sleek, low-profile designat just 23mm tall and 35mm wide adds minimal bulk to your cockpit Versatile mountingusing included high-strength EPDM o-rings or nylon zip ties on stem or handlebar Fits bar diameters from 25mm to 40mmfor broad compatibility Glass-filled nylon and polycarbonate constructionfor lightweight durability SPECIFICATIONSBar/Stem Compatibility25mm - 40mm diameter Dimensions23mm tall x 35mm wide Material Glass-filled nylon, polycarbonate Mounting Hardware EPDM o-rings or nylon zip ties (included)Compatibility All Quad Lock cases and Universal Adaptors (sold separately) | Quad Lock | Stem/handlebar Bike Mount Black/blue | Nylon