Replacement Parts Compatible for The X/X PRO/Z1/F1 Type Electric Toothbrush Heads - 4 Sets of Kits(4Black)

- Compatible with X/X PRO/Z1/F1 electric toothbrushes?kits fit specified models for smooth installation. - Includes 4 sets of replacement parts, sufficient for regular use and minimizing repurchase needs. - Tool-free design enables quick attachment of kits to compatible electric toothbrushes easily. - Ergonomic shape adapts to teeth and gums, ensuring comfortable and comprehensive use. - Reliable replacement kits for worn heads, sustaining consistent care and device functionality.