3M(TM) Polyester Film Tape 856 Transparent, 2 in x 72 yd, 24 per case 3M(TM) Polyester Film Tape 856 Transparent, 2.0 mil (0.05 mm) polyester film tape with acrylic adhesive. 3M(TM) Polyester Film Tape 856, An economically priced edging and reinforcing tape. This product has a tough polyester backing and is slightly more elastic and conformable than 8411 and 8412 tape. Can be used for permanent edging and reinforcing three hole punched paper and cardboard.