The screw-type anchor is the industry standard but is still very effective. Fits all major manufactures of winter safety covers. All anchors will lay flush with your deck when not in use. Anchors are solid brass.
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