EASY TO INSTALL
1. Draw out the umbrella and pole from the hole on the patio table.
2. Install the cone wedge onto the umbrella pole.
3. Insert the umbrella and pole back to the hole on the patio table.
4. Spin and push the cone wedge downward gently in order to have it sinked into the hole compactly. (lube / oil / vaseline might help in doing this)
5. DONE