16/20PCSCompatible for HX6511 Replacement Toothbrush Heads(16pcs)

- Replacement toothbrush heads compatible with HX6511, available in 16 and 20-piece packs - Multiple pack choices meet daily replacement needs and reduce frequent purchase troubles - Precise fit ensures secure attachment to the handle, preventing loosening during daily use - Tool-free installation allows quick and easy replacement whenever needed - Compact and lightweight design enables easy storage and convenient carrying for home and travel