Bienfang 527K white drawing Bristol is an economical white drawing Bristol board with a "regular" vellum texture surface. Excellent drawing paper for pencil drawings and all DRY MEDIA. Bienfang vellum-finish Bristol board is a 2-ply, acid free, recycled. Bienfang 528P white smooth texture Bristol board drawing paper is similar to the 527K vellum finish but with a smooth surface. This durable, acid-free surface is good for all WET MEDIA, airbrush, pen and ink, and mechanical drawing instruments. 20-sheet pads, available in 4 popular sizes. 146 lb. Bienfang white Bristol board drawing paper pads.