Sonicare variety 6 pack of replacement brush heads. You will receive 2 of each the 'W' white with green bristles / 'Standard' green with white bristles and / 'G2' white with blue bristles. SAVE HUGE OVER PURCHASING RETAIL. W and G2 have the rfid chip so it can be connected to your phone through their app. Feel free to ask any questions and be sure to check out my other replacement brush options. Thanks for looking.