Wood Grip MCO-10 Brass Anchor Collar for Pool Safety Covers - 10 Pack Brass Anchor collar / Beauty ring - Dimension: ID 9/16" & OD 1-1/2" This is designed to be used with Pool cover Brass Anchor Works with Loop-Loc, Rayner, Latham, GLI and most major safety cover anchors Made from high quality brass metal - longer durability in harsh cold weather Include TEN Collars.