6-Pack Philips Sonicare W2 Optimal White Replacement Toothbrush Heads White HX6066/71Experience the Cross Action toothbrush head designed by the #1 dentist recommended brand worldwide Oral B. The Criss cross bristles are set at a 16 degree angle to effective clean along the gum line and reach deep between the teeth for 100 per cent more plaque removal vs. a regular manual toothbrush. The Cross Action replacement toothbrush head works with Oral B Vitality (except for Vitality Sonic), Oral B PRO, Oral B SMART and Oral B GENIUS.