The Quad Lock Bike Mount is the lightest, strongest and most secure smartphone bike mount on the marketSecure MountingThe patented dual-stage lock is strong enough to lift up to 80 kg (yep, we tested it). So you can ride with confidence over bumps and jumps knowing that your iPhone or Galaxy isn#39;tt going anywhere your bike isn'tQuick to Attach / DettachSimply twist and lock to view apps such as Strava®, MapmyRide or Apple® maps as you ride. Detach just as easily so you don't miss a photo opportunity or important phone call. Remember, it's all in the technique, not the forceSleek DesignAt just 23mm tall and 35mm wide, the Quad Lock® Bike Mount fits seamlessly onto the stem or handlebar of your bikeIncluded1 x Quad Lock® Bike Mount, Mounting Hardwear, 2 x EPDM mounting o-rings (small), 2 x EPDM mounting o-rings (large), 2 x Nylon zip ties (black)TechnicalSuit bar sizes 25-40mm in diameter, glass filled nylon / polycarbonate construction, stainless steel fasteners, 23.3mm tall, 35.5mm