... elements.According to different shape, we make ROD, U, W, H, SPIRAL and DOUBLE - SPIRAL types. Diameter 8mm to 55mm ... and so on.When you place an order of the W Shape SiC Heating Elements, please give following information:OD ... ;OL: Overall Length, A: Shank SpacingOrder Sample of the W Shape SiC Heating ElementW Shape: OD=20mm, HZ=250mm, ... 9Ω Specify As: 20/250/625/52/0.9Ω W type SiC heating element