Rotating Hook for Hanging Chairs is what you need
This all-in-one swivel chair for hanging chairs is not only a very reliable hook but also allows the chair to rotate in all directions.
Includes an extendable chain of vertical adjustment, 4 expandable screws for concrete and a carabiner.

Ideal for balconies and all types of beams, even wood as you only need to replace the screws.

Holds 200kg.