TTnight Alloy Bike Bicycle Handle Bar Stand Extender Mount Holder Bicycle Cage Bracket Post Bar Mount Easy to install. Screw fixed, prevent your device from dropping.Strong and sturdy mount on your bike. Bike Mount, fits for bicycle/motorcycle handlebar diameter 31.8 mm (25.4 mm handlebar need to add gasket) Bike holder, Special stretch clip design for safety lock,strengthen locking function,keeps your device more secure. Bike mount, Fully adjustable with 90 degree rotation and tilt.