The medium sized T3 straighteners have 1 3/8” wide plates which provide the most versatility. This iron is all purpose and it works superbly on all hair types. T3 straighteners emit more negative ions than any other straightener on the market. Tourmaline is infused into the heater which allows for more ions and infrared heat. Heating to a maximum of 210 degrees, the variable heat settings allow for every hair type from fine to thick. The T3 straighteners give your hair supurb shine and a far healthier result than using other straighteners. Traditional ceramic irons rely on heat alone which risks damage to the hair. T3 relies on ionic and infrared, which provides a better, healthier method