Janeke Spiral Thermal Round Hair Brush SP511C-ALMJaneke Thermal Round Brush inner diameter 15mm outer diameter 25mm Brushing Janeke Thermal Round Brush is a brush with ceramic coating that will provide easy styling and cope with even the most unruly hair. An extended working surface of 11. 5 cm will ensure ease of work. The absence of additional elements in the brushing working area will ensure that hair slides without getting into the spaces between the connecting elements. Janeke Thermal Round