The e-Series Standard Replacement Brush Heads, a product of the Phillips Sonicare brand, works with Sonicare Advance, Elite, and Essence Series handles. These brush heads offer a lasting clean effect for the teeth, thus enhancing the dental health of the user. The product features medium, extra-soft, contoured bristles with a slim, angled neck for comfortable use and to reach hard-to-clean areas where plaque can hide.