We make 1700C and 1800C U shape MoSi2 heating elements, high quality, very competitive price, fast delivery. ... .The standard diameters are: 3/6mm, 4/9mm, 6/12mm, 9/18mm, 12/24mmWhen you place an order of the U Shape Mosi2 ... have the special requirement for the resistance, please tell us! U shape MoSi2 heating element