1 pack of Oral SteriCare Sonic Toothbrush replacement heads – contains 2 toothbrush heads. Oral SteriCare uses an advanced Ultra Violet light technology to effectively clean your toothbrush. It may then be stored in the UV Santizer remaining clean until your next use. Simple and easy to use by placing your toothbrush into the Oral SteriCare UV Sanitizer unit. Close unit lid to automatically activate the UV light delivering approximately 6 minutes of continuous UV light illumination to deeply sanitize your toothbrush bristles at a cellular level. Oral Hygiene is an important part of health and disease prevention, just as important as washing your hands. Your toothbrush is a known source of bacteria and germs. The Oral SteriCare UV Sanitizer sanitizes your toothbrush head guarding against harmful bacteria that may cause disease.