This Package Contains Two Oral-B Cross Action Replacement Heads Are Designed To Reach Deep In Between Teeth And Cover More Surface For A Superior Clean Versus A Regular Manual Toothbrush.it Features Precisely Angled Bristles For A Comprehensive Clean. Various Bristles Levels Can Reach And Remove More Dental Plaque. Compatible With The Entire Line-Up Of Oral-B Rechargeable Handles, Except For Oral-B Sonic Toothbrushes.