Amazon.com: Universal Motorcycle Fork Stem Mount Kit Techgripper Mohard Bike Phone Holder, 2023 Upgrade [Never Fall Off] Rotatable Bike Bicycle Motorcycle Scooter Phone Holder Iphone 13 Pro Max Mohard Bike Phone Holder, 2023 Upgrade [Never Fall Off] Rotatable. Robust Motorbike Clamp Mount & Strong Grip Holder for iPhone 13 Cradle Clamping Dimensions: Cradle will hold phones up to 3. 9 inches wide Lipped grip means phone will stay secure in the holder. The redesigned cradle offers even greater support for larger phones in bumpy conditions. Mount; Unique jaw design that has an extra wide clamping range for both flat and tubular surfaces, including small posts. Conveniently installs and removes without any tools on flat as well as round, square, or odd shaped bars and rails. Clamps onto handlebars and posts 0. 25 2 inches (0. 6cm 5cm) in diameter Clamps into tables, desks, and counters 0. 2 1. 75 inches (0. 5cm 4. 45cm) thick Clamp mount is made of high strength composite materials with corrosion resistant stainless steel hardware The mount installs easily with a turn of the clamp's knob. The clamp is padded in order to provide gripping support and protection to the mounting surface An optional removable security knob is provided to deter theft. Simply remove the existing knob and tighten the clamp with the security knob. Once tightened, the security knob can be removed to deter theft