Broad Compatibility: Iemegumi replacement toothbrush heads are compatible with Philips Sonicare C1, C2, C3, A3, W3, G2, G3, 4100, 5100, 6100, 1100, 2100 electric toothbrush handles (all Snap-On systems). Suitable for 2 Series Plaque Control, 3 Series Gum Health, DiamondClean, ProtectiveClean, FlexCare, FlexCare+, HealthyWhite, HealthyWhite+, EasyClean, DailyClean, ExpertClean, PowerUp, Essence+, and Simply Clean. DuPont bristles whiten and protect gums in one: Iemegumi replacement brush heads use high-quality DuPont bristles, designed for whitening teeth and protecting gums. The unique arrangement of bristles can effectively remove stains on the surface of teeth while gently massaging gums, making your smile brighter and your gums healthier. Copper-Free Bristle Technology: Featuring advanced copper-free bristle technology, these brush heads ensure bristles are stronger and more durable while avoiding any discomfort from metal contact with teeth. Copper-free bristles significantly enhance bristle stability and longevity. Use with confidence, knowing your teeth and the environment are receiving the best care possible! Precision Whitening 3D Round Bristles: With 40% more bristles, these brush heads maximize contact with teeth, thoroughly cleaning between teeth and hard-to-reach areas. The 3D round bristle processing technology at the end ensures that the bristles are soft and smooth, ideal for dual-purpose whitening and sensitive gum care. The rounded ends gently touch the gums, reducing irritation while effectively removing surface stains for gentle whitening. Silicone-Wrapped Brush Head Comfortable Gum Care: The toothbrush head is wrapped in soft silicone to reduce the impact of electric toothbrush vibration on the gums, providing gentle care for your gums during brushing.The color-changing bristles remind you when it's time to replace the brush head, while the protective cap keeps out dust, maintaining brush head hygiene and ensuring healthier teeth. Each box contains 8 brush heads, ideal for long-term use. Iemegumi replacement toothbrush heads, bringing a new level of oral care to your daily routine. Our replacement toothbrush heads are compatible with Philips Sonicare C1, C2, C3, A3, W3, G2, G3, 4100, 5100, 6100, 1100, and 2100 electric toothbrush handles (all Snap-On series), and suitable for 2 Series Plaque Control, 3 Series Gum Health, DiamondClean, ProtectiveClean, FlexCare, FlexCare+, HealthyWhite, HealthyWhite+, EasyClean, DailyClean, ExpertClean, PowerUp, Essence+, and Simply Clean, making it easy for you to find the right fit. Our toothbrush heads feature DuPont bristles, rigorously tested to ensure a soft and comfortable brushing experience every time. The high-density bristles penetrate deep between teeth, enhancing oral health. Specially designed for whitening and gum care, the bristles gently polish away surface stains, restoring the natural brightness of your teeth. The soft bristles also protect your gums, making each brushing session a pleasure and bringing you a healthy, confident smile. Copper-free bristle technology ensures the bristles are stronger and more durable, while avoiding any discomfort from metal contact with your teeth. Copper-free bristles are significantly enhance bristle stability and lifespan, giving you peace of mind with every use. Iemegumi replacement toothbrush heads feature a 40% increase in bristle density, maximizing contact with your teeth for deep cleaning of gaps and hard-to-reach areas. The unique 3D rounded design improves cleaning efficiency while effectively protecting your gums from brushing damage, providing comprehensive oral care and a comfortable brushing experience. The toothbrush heads are wrapped in silicone, offering extra protection and a gentler touch on your gums. The fade indicator bristles remind you when it's time to replace the brush head, ensuring optimal oral hygiene. The included protective cap keeps the brush head clean by preventing dust accumulation, giving your family the best care possible.