8-16 Pack Replacement Electric Toothbrush Heads Fit 4100 6500 6100 Models | Multi-quantity soft bristle refill brush heads matched for designated electric toothbrush equipment(12pcs Black)

- 1. Compatible with 4100, 6500, and 6100 electric toothbrushes, seamless replacement. - 2. Available in packages of 8-16 pieces to meet diverse long-term replacement needs. - 3. Use a soft brush head to provide a gentle experience. - 4. Design that effectively matches the corresponding electric toothbrush functions. - 5. Easy to install and disassemble, no auxiliary tools required.