Nonio + Whitening Refill 2 pcs— Replacement heads for Systema Lion electric toothbrush, 2 pcsReplacement heads for Systema Lion electric toothbrush Nonio + Whitening tthin and compact head easily penetrates deep into the mouth. Multi faceted bristles with star shaped cross section reliably capture toothpaste and remove stains. Compatible with brush: Systema Lion Electric Toothbrush 9000 vibrations min, high speed, three dimensional vibration that moves the brush head. The brush applies soft pressure to the teeth, quickly removing plaque.