Seth Cole heavy parchment tracing paper provides high transparency when overlaying drawings. Fine-textured surface is good for pencils, pens, markers. Ideal for transfer, tracing, layout, and overlay work. Provides sharp diazo prints and can be run through large document copiers. Strong enough to withstand erasure. 37 lb. rolls with either 1" or 2" core. Seth Cole tracing papers are quality-made in the USA.