Color Brush Head Black Size 1 Unit (Pack of 1) Material Acrylonitrile Butadiene Styrene Age Range (description) Adult< /p> Bristle Material Nylon Item Firmness Description Soft Compatible Devices Electric Brush Number of Pieces 5 Number of units 1.00 unit See more About this item Electric toothbrush head x 5 with soft bristles only compatible for Fairywill D7/D8/FW507/FW508/FW551/FW2011/FW917/FW959/FW515, Seago SG E9. Material: ABS/TPE/Dupont nylon. Hair type: soft. Wavy bristles to adapt to the topography of the teeth for deep cleaning of the gums and hard to reach areas. Electric toothbrush refill toothed bulbs to adapt to the topography of the teeth for a thorough cleaning of gums and hard to reach areas. Rounded bristle top for safety and softness. High Brand Quality Replacement Brush Heads: This toothbrush head is produced by Seago, please purchase it according to your toothbrush model! Dentists suggest replacing the toothbrush head at least every 3 months to avoid surpass the breed of bacteria.