1.High-Quality Replacement Toothbrush Heads: Replacement toothbrush heads are efficient to easily remove teeth stains and whiten your teeth. It is proven that electric toothbrush heads can remove up to 7x more plaque than a manual toothbrush 2.High Compatibility:Toothbrush replacement heads design for screw-on system toothbrush, they are compatible with e series, Essence, Elite, Xtreme, Advance.These replacement toothbrush head can be easily screwed into and unscrew the toothbrush handle for a firm fit, easy to instal and cleaning 3.When to Replace My Toothbrush Head:Our toothbrush heads blue bristles will fade in color to indicator you replace your brush heads.Please replace toothbrush heads in time to ensuring most effective clean,usually 3 months 4.Take Care of Your Health: These tooth brush heads bristles with end-rounded design would better care for teeth and gums, give you more comfortable brushing experience everyday.Each toothbrush replacement head comes with protective cover, which can against dust Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store