GHD 2” Wide Gold Plate Hair Straightener Flat Iron Styler Ceramic Professional The GHD SS5.0 is a wide plate hair straightener that is a version of the GHD 5.0 model. The SS5.0 has 2-inch wide plates. The SS5.0 operates at around 180 degrees centigrade, but may drop about 10 degrees when used with thick hair. Excellent preowned and working condition.