Spread glue or paste smoothly and evenly on spines, pages and mounting boardsMade from 100% natural animal bristle. Large brushes are ideal for spine gluing. Smaller brushes are perfect for page repairs. Bristles clean up quickly and easily.Overall dimensions:Part Number Diameter x L 1134 1/4 x 11 1/2" 502 1/2 x 6" 763 1/2 x 8" 723 1 x 10 1/2"