This is the only spring loaded pool cover anchor around that requires only one twist up and one twist down. Fits all major manufactures of winter safety covers. Anchors are solid brass and lay flush with your deck when not in use.
Installation requires masonry drill bit of 7/8 inches. 3/4 inch drill bits will also work. Anchor can replace most previously drilled safety cover anchor holes.
Standard Replacement Anchor for Most Safety Cover Manufacturers