Non-Shrink Polyvinyl Chloride (PVC) Tubing, 3 American Wire Gauge (AWG) (6.32 mm) x 1000 Foot (304.8 mm) reel, 0.249 Inch (6.32 mm) Maximum Inside Diameter, 300 Volts, Black. 105 degrees Celsius rated. Provides insulation and protection for lead wires, wire harness assemblies, soldered joints, and components in electrical and electronic equipment. All-purpose, flexible, non-shrinkable. Resistant to heat and moisture. Applicable Specifications are UL224 VW-1, UL oil resistant class 1 rating, UL Recognized. CSA C22.2 No. 198.1 (OFT), ASTM D-922 Grade CFR, MIL-I-631 Type F, Form U, Grade C- Class 1 Category 1.