Replacement brush Head Description:For xiaomi T300/500 Adopting high quality bristles to offer larger brushing experience, this brush head alternative is specifically designed With W-shaped design with mini rounding head, the comb can catch up with to wash the hard-to-reach interdental locations and remove plaque and stains effectively. As dentists recommend that the brush head needs to be replaced after utilizing 2 - three months, it'd be bigger for you to replace the brush head regularly. Main features: 1 for Automatic Sonic Toothbrush 2 to clean the hard-to-reach interdental field three bristle won't scratch your gums or harm the skin 4, environmentally nice and healthy five to replace the brush head for 2 - three months through dentists, 2pcs in a single kit is useful to interchange the brush head. 6 DuPont American tynex traditional zero bristles bristles,gently for your tooth sealed packing