Bristle firmness Very firmFirmLess firmThe angle of the bristles Plus 5 degreeIn lineMinus 5 degreeNumber of rows 234Number of tufts 57912Number of bristles 758085Bristle Design Flat MultilevelRippledAngledCrisscrossedSpiral FilamentTapered FilamentBilevel-orthodontic V-shapedBrush head size SmallMediumLargeHandle (Grip) design StraightCurvedAngular planeHandle (Grip) material PlasticRubberBambooBristle fiber types Extra-soft Soft = 0.007 inch (0.2mm)Medium = 0.012 inch (0.3mm)Hard = 0.014 inch (0.4mm)Bristle shape RectanglarDiamondSquareovalRoundTufts Tapered End-roundedBristle head ReplaceableNot replaceableNameSubmit