J.V. Converting DC-4420LB/BLK336 JVCC DC-4420LB Double Coated PVC Tape: 3" x 36 yd, Black Core: 3 inch diameter neutral Backing/carrier: polyvinyl chloride (pvc) film Adhesive: water based acrylic Release liner: gold siliconized paper Thickness: 10.7 mils (carrier, adhesive, liner) 7.87 mils (carrier, adhesive) 3.2 mils (carrier)