The combination of the pressure-sensitive, rubber-resin adhesive and the PVC backing offers excellent electrical and mechanical protection | Tape measures 1 in x 66 ft x 8.5 mil | Made of black durable PVC | Operating temperature range of 0° to 220°F (-18° to 105°C) exceeds most commercial-grade specifications | UL Listed, CSA Certified and RoHS 2011/65/EU Compliant | 12 rolls/carton, 48 rolls/case