Replacement  brush Head Description:doxo Adopting high-quality bristles to provide better brushing experience, this brush head replacement is specially designed  With W-shaped design with mini rounding head, the brush can get closer to clean the hard-to-reach interdental areas and remove plaque and stains effectively. As dentists recommend that the brush head should be replaced after using 2 - 3 months, it would be better for you to replace the brush head regularly.  Main features: 1.Suitable for Automatic Sonic Toothbrush 2.easy to clean the hard-to-reach interdental area 3.Rounding bristle will not scratch your gums or damage the surface 4.Rust-free, environmentally friendly and healthy 5.Recommended to replace the brush head for 2 - 3 months by dentists, 2pcs in one package is convenient to replace the brush head. 6.Adopt DuPont American tynex classic 0.152mm bristles.Soft bristles,gently to your teeth. Indenpently sealed packing