Compatible for Electric Toothbrush Heads Replacement X1 X3 X3U X5 Teeth Brush Replacement Heads(2 Box Black)

- Electric toothbrush replacement heads (for X1/X3/X3U/X5): Positioned as dedicated refills for specific X-series electric toothbrushes, focusing on reliable daily oral cleaning performance. - Precise compatibility with X1/X3/X3U/X5 models: Engineered to match the structural specifications of these electric toothbrushes, ensuring secure fit and smooth operation during use. - Designed for electric toothbrush functionality: Aligns with the basic working requirements of X1/X3/X3U/X5 electric toothbrushes, supporting their standard brushing functions without compatibility issues. - Suitable for daily oral care cycles: Ideal for integrating into morning and evening brushing routines, providing consistent cleaning support for users of X1/X3/X3U/X5 electric toothbrushes. - Essential replacement parts for X-series electric toothbrushes: Complements the main body of X1/X3/X3U/X5 electric toothbrushes, helping maintain long-term oral hygiene by replacing worn 刷? (brush heads) timely.