EACH NATURAL SLATE COASTER INCLUDES FEET TO PROTECT FURNITURE. DUE TO THE ITEM MATERIAL NATURAL VARIATIONS MAY OCCUR FROM PIECE TO PIECE. BOTH SINGLE COASTERS (#1661) AND SETS OF 4 (#1664) ARE PACKAGED IN ONYX PRESENTATION BOXES. SQUARE VERSION AVAILABLE AS WELL: #1651 SINGLE & #1654 SET. 4" D X 3/16" W