Shurtape CP-66/NAT360 CP-66 Contractor Grade Masking Tape: 3" x 60 yd, Natural Core: 3 inch diameter Backing/carrier: crepe paper Adhesive: rubber-based Certifications: astm d 6123/d 6123m-97 (2012), type i; ppp-t-42c, type i Thickness: 5.8 mils (carrier, adhesive)