Shurtape CP-743 Matte Black Paper Tape (aka Permacel P-743): 3/4 in. x 60 yds. (Black) Core: 3 inch diameter Backing/carrier: impregnated paper Adhesive: rubber-based Certifications: astm d 6123/d 6123m-97 (2012), type i Thickness: 7 mils (carrier, adhesive)