BSRESIN 8 Pack Cork Coasters for Diamond Art Backing, 3.7 Inch Self-Adhesive Cork Board for Diamond Art Coasters, Blank Cork Mat for DIY Adult Craft Accessories

These 3.7‑inch self‑adhesive cork squares give a firm, reusable surface for your diamond‑painting pieces. They're cut to fit standard frames, so you can attach them quickly without extra tools.

Ideal for hobbyists who want a clean backing while they work, and for anyone needing to protect tables or shelves from glue residue. Stick one under a finished panel to keep it flat during display, or use a few as a temporary work mat while you place beads.