FitnessThe clamp can securely grips round, square,flat and irregular shaped rails and bars ranging from 0.5"to 2 inches in outer diameter. The clip ball head is compatible with RAM Mounts B Size Double Socket Arm & Bike Motorcycle Phone Holder Versatile in ApplicationThis amazing clamp can be mounted on the yoke of an aircraft, handlebars of bicycles/bikes/motorcycle/stroller/mountain bikes/dirt bikes/trek bikes/road bikes/golf carts/electric scooters/ATV, or even on kayak rails and roll bars,roll cage,push power,motorcycle Goldwing bar! This is the perfect mounting base for your gopro, phone or tablet! Built -SturdyThe main body of the claw is made of aluminum alloy, and the rotating part is made of high quality stainless steel screws Grips Well The horizontal line in the claw is a fantastic feature that protects the handle from scratches and gives it a better grip! Easy to Use and RemoveThat's what YOU love about this clamp-the ability to