Tandex flexi interdental brushes extra fine tapered lilac is a specially designed interdental brush with an ergonomic grip the flexible grip makes it easy to reach even interdental spaces in the back of the mouth tandex flexi interdental brushes extra micro fine gives an efficient and gentle treatment for booth teeth and gums with nine different sizes there are brushes to suit small interdental spaces or more complex bridge and implant spacers your dentist or hygienist will help you find a s