Compatible for X/X PRO/ Z1/ F1 Brush Heads Sonic Electric Toothbrush Soft Bristle Head Nozzles 4PCS(4Black)

- 4 pieces of soft bristle replacement heads fit X, X PRO, Z1 and F1 sonic electric toothbrushes. - Soft bristle nozzles suit daily brushing and integrate with sonic toothbrush movements. - Designed for easy and removal during routine oral care. - Matches the structure of specified models for stable and consistent use. - Supports regular replacement to keep up with daily oral hygiene needs.