Protects memories and tabletops, too. Fill these rollercoasters with memento corks so only wine memories stay, not furniture spots. A fun, environmentally friendly method to turn your love for wine into good-looking home accents. We supply the strong mahogany frames and guidelines. You provide the wine corks and creativity. Mahogany sourced from sustainable tree plantations. Set of 4. Size: 4-1/4"L x 4-1/4"W Approximately 8 wine corks are needed to complete one Wine Cork Coaster. Note: Wine corks vary in size.