Masterpieces puzzle glue sheets are an easy way to preserve your hard work. Includes 12 permanent adhesive sheets (each 7.5-Inches by 7-inches) enough to glue a 1000-Piece puzzle or two 500-piece puzzles. There are also 2 plastic hangers to hang your piece once it is complete. Glue sheets are quick, clear, and clean just peel and stick! coat both sizes of puzzle for added strength.