PEARLIE WHITE Interdental Brush Refills ID/2 Tapered 12sSpecially designed for effective cleaning around bridges? braces and in the wider spaces in between teeth.Made with high tensile strength? plastic coated? stainless steel wire in its core and its bristles are made from the same memory retentive mylon as used for toothbrushes for long life.DirectionsInsert interdental brush with care in spaces in between teeth.Use a gently? straight? back and forth motion to remove any food particles or plaque.Do not force.To insert brushSlide handle head upwardsInsert the wire extension of the interdental brush through holeThen slide head downwards until it snaps into place.Brush is now ready to use.To removeChange the interdental brush when the bristles show signs of wear.To remove? slide handle head upwards and pull out interdental brush.