Oral-B Pulsonic Replacement Electric Toothbrush Head, S15-4... Whitens teeth by reducing surface stains by up to 94% in two weeks, Contours your teeth for an effective clean while remaining gentle on teeth and gums. FEATURES: Precision bristles: Promote naturally whiter teeth by gently polishing off surface stains; Precision Tip Replacement Head (Included): Cleans between teeth in hard-to-reach areas?where stains start?and is also ideal for cleaning around dental work with its Interspace design. The Oral-B Pulsonic Precision Tip replacement heads fit the following rechargeable electric toothbrush models: Oral-B Pulsonic.