J-Type "Extension Grade" 24 AWG thermocouple wire with PFA insulation and a solid core.

• Higher temperature rating than PVC, good to 482ºF or 250ºC 
• J Type thermocouple wire for making thermocouples or extension wires
• Iron / Constantan type-J thermocouple wire with Standard Accuracy (whichever is greater): +/- 2.5C or +/- .75%
• Solid wire, AWG 24 (0.5 mm)
• ANSI color coded PFA insulation: white = + (positive), red = - (negative)
• Sold in 10 yard increments: 1 unit = 10 yards / 30 ft., order 2 units and you receive a continuous 20 yards of wire etc.