Features:�� Clean teeth and message gums gently.�� Effectively remove plague without irritating gums.�� Soft bristle， extending into the depths of teeth， effectively remove bacteria.�� High-speed rotating and slight vibration which can promote oral blood circulation and massage the gums organizations.�� Durable to use and easy to replace.�� Appropriate for kids.�� Material: ABS�� Measurement of each brush head: 70 x 18 x 10 mm�� 4pcs in per set.How to brush your teeth properly:- Replace your toothbrush regularly.- Use a small amount of toothpaste each time.- Set your bristles at the gum line at a 45 degree angle.- Spend at least three minutes brushing.- Brush your molars and the inner surfaces of your teeth. Finally， gently brush your tongue.- Please remember to brush your teeth at least twice a day.Warm reminds:- After brushing， rinse your toothbrush with hot water and stand it up in a water glass to air-dry.- Dental experts say it's a good idea to replace your toothbrush every two to three months. Package weight: 0.16 kg Package size (L x W x H): 17.000 x 9.000 x 4.000 cm / 6.693 x 3.543 x 1.575 inches Package Contents: 20 x EB - 10A Replacement Kids Brush Head， 20 x Rubber Gasket