Elmec Manifold Heaters are available in Round & Square cross sections and various sizes and shapes as per customer's spcifications.The outer sheath is made of Inconel. Features Available in Following cross Sections: O 6.7mm, 8mm 6mm X 6mm, 8mm X 8mm Maximum Length - 2000mm Maximum surface Temperature 860oC Maximum Surface Load 8 watts / cm2 Bend radius minimum - 14mm