MAYCREATE Oral B electric brush heads help refresh compatible Braun electric toothbrushes when your current head is worn. This four-pack provides replacement heads for routine brushing at home, in the office, or while travelling.Compatible with Braun Oral B 500, 600, 1000, 2000, 2500, 3000, 5000, and 7000 series toothbrushes. Please compare your toothbrush model with the compatibility information before purchase.The replacement-head format lets you keep using your existing compatible handle instead of replacing the complete electric toothbrush. Four pieces make it convenient to keep spare heads available for scheduled changes or household use.To install, remove the used head and fit the replacement onto the handle. Rinse after brushing and allow it to air dry. Check the bristles regularly and replace the head when they show visible wear.