"Hot fix" is an adhesive on the backside of a Flat Back Crystal. When subjected to a temperature of 170oC (338oF), the adhesive is activated and bonds with the carrier material. As it cools off, it fixes the elements securely and permanently and gives a clean finish. Hot fix rhinestones are widely used in apparel production, such as t-shirt, jean, outer wear, sweater, sock, shoes and so on. There are many kinds of hot fix rhinestones in stock. Quality: Swarovski, Prociosa, DMC, Korea A and Korea B. Size: SS6, SS10, SS12, SS16, SS20, SS30, SS34, SS40. Color: Many colors, please check our color card.