The Dual Clean replacement toothbrush head has two moving brush heads for a comprehensive clean. One bristle section moves side to side while the other oscillates and pulsates for twice the cleaning action. It can even penetrate hard-to-reach areas. Try the Dual Clean and discover a thorough, whole-mouth clean and feel fresher.Dual head for complimentary cleaning movements for thorough cleaning and gentle gum massagingRemove up to twice as much plaque as a regular manual toothbrushWith dentist recommended oscillate and rotate technology for maximum cleaningCompatible with the entire lineup of Oral-B rechargeable electric toothbrush handles, except for Oral-B Pulsonic toothbrushesPack of 4 This item is sold by Electric Mania an offshore business located in the UK and may incur NZ customs duty or tax. Find out more at http://www.whatsmyduty.org.nz/