This Conair Instant Heat Dual Ionic Hair Setter takes 2 minutes and the rollers are ready for use. It uses ionic energy to neutralize positive charges in the air that cause frizziness and static electricity, while ceramic rollers provide better heat transfer for extra shine and conditioning. Includes 20 multi-size rollers with styling clips. Two minutes to heat. Includes 20 multi-size ceramic rollers with clips. Dual heat comes from both the clip and the roller for extra hold. Features stay-cool end rings. With a 5' line cord. Number of Pieces: 20. Used For: Curl. For Use On: Hair. Hair Type: All Hair Types. Features: Ceramic Rollers, Ready Indicator Light, Power Indicator Light, 75-Sec. Heat Up, Corded. Material: Ceramic. Heat Maximum: 390 degrees. Power Source: Electric.