I have brass anchors like below in the concrete deck around my pool.
Today, when I was raising the inner screw to install the cover, the screw was being very difficult. Trying to raise it, the inner piece snapped. Now I'm left with a the inner piece broken and no way to loosen/raise the inner screw.
What is the best way to remove the entire device without damaging the concrete?
EDIT: Anchors were installed after the concrete was dry, so there is no conformance to the shape of the anchor.