✓Big Brands Original Quality: This toothbrush head is produced by Seago, which is the manufacturer of many brands and Fairywill electric toothbrushes on , please buy it according to your toothbrush model!. ✓Worthwhile Purchase: Package contains 5 Pack vacuum-packed replacement brushes, will use last for many months or even more than one year. Dentists recommend replacing the brush head every 3 months to avoid exceeding the breed of bacteria. ✓Gentle but Effective Cleaning: The innovative 3D cutting process allows each tooth to be cleaned in three dimensions. The Unique "W” Shaped Brush Heads Design, more densely-packed bristles to suit teeth topography for thorough cleaning of gums and hard-to-reach areas. The 0.152mm round-ended bristles protect your teeth and gums from being hurt, safe & extra gentle. ✓Safety Material Replacement Heads: ABS Food Grade Safety material, High-quality Dupont Nylon Soft Bristles. Unlocks with a right turn, convenient to replace without any extra auxiliary means, easy to use. ✓5 Pcs Electric Toothbrush Replacement Heads 100% Compatible for Fairywill Fairywell D1 / D3 / D7 / D8 / FW507 / FW508 / FW515 / FW551 / FW917 / FW959 / FW2011; Toothbrush Heads Compatible for Seago SG-E9 / SG-507 / SG-958 / SG-610 and so on; Toothbrush Heads Compatible for Dnsly TB-5; Toothbrush Heads Compatible for Sboly/OKMIMO/Initio/KIPOZI/Wovida/Gloridea/Demita;Toothbrush Heads Compatible for ATMOKO HP126A / HP150A. (DOES NOT Fit: Fairywill E11; P11; 2001; 2081; 2205; 2209; 921.).