<prompt> According to ADA specification of toothbrush width of brush head should be:58-38inches.516-38inches.58-316inches.516-316inches.  <response>: Length of brush head: 1-1.25 inches.Width of brush head: 516-32 inches.Bristles: 2-4 rows.Tufts in a row: 5-12 tufts 