ISC Racers Tape HT2308 ISC Helicopter-OG Surface Guard Tape (8 mil Outdoor Grade): 2" x 30 ft, Transparent Core: 3 inch diameter Backing/carrier: polyurethane film Adhesive: acrylic Release liner: 92 lb. Polycoated white paper Thickness: 12.7 mils (carrier, adhesive, liner) 8 mils (carrier, adhesive) 4.7 mils (liner)