Borden & Riley #41 Lightweight Tracing Paper Roll, 21" x 20 Yards, 40 GSM/25 LB, 1 Roll Each is designed for transfer tracing, fine line drafting, sketching, engineering and architectural drawings, etc. Exceptionally clear paper and top-rated in transparency. Fine textured surface withstands repeated erasures without ghosting. Paper resists curling and wrinkling. Made in USA.