7 inch x 24 inch marsh oil boards. High-quality oil treated paperboard resists ink bleed-through and results in clean, sharp marks with the stenciling application. Oils in the paperboard lubricate the punches each time a character is cut which extends the life of the stencil machine. Cut with the grain to maintain rigidity. Ideal for flat or curved surfaces. Will not tear or pull when cut. 015 inch thickness.