Hook instructions for use:
1. Turn the twist counterclockwise to open the hook.
2. Insert the air outlet, hook the hook to the blade.
3. Clockwise rotation of the twist to tighten the hook.
Special Note: As the knob adjustment is very labor-saving, just fixed must stop rotating, remember to use excessive force, so as not to damage the air outlet blades.
Installation instructions:
1. Screw the nut down first.
2. Snap the nut on the ball head upside down.
3. Insert the ball head into the slot.
4. Twist the nut to complete the installation.