The "Premium Care Series" features a wide head that changes the conventional understanding of toothbrushes. Once you use it, you'll feel the exceptional brushing experience. The thickness of the head is approximately 25% thinner than our conventional products, making it easy to maneuver in the mouth with its slim design. The densely packed bristles envelop the teeth, allowing the fine tips of the thin head to reach the often neglected back teeth. The ultra-fine bristles with a diameter of φ0.01 mm penetrate the periodontal pockets to dislodge plaque, while the flat bristles effectively remove surface plaque. The outer bristles are soft to gently care for the gums, while the inner bristles are hard to thoroughly clean the tooth surfaces and the gum line, featuring double bristle planting. With a high bristle density and a wide contact area between the teeth and the brush, plaque can be easily and efficiently removed with your usual brushing. The wide head has a high number of bristle holes, totaling 41. The 6-row compact head easily reaches narrow spaces. Bristle hardness is medium. Model number: B-8000M. Information tag number: 52. Bristle material: saturated polyester resin. Main body material: polypropylene; rubber part: thermoplastic elast