The Elleebana Tree Tool Y Comb has two working surfaces, one of which is equipped with small denticles (tooth like and similar to a comb). They allow you to grab the eyelash from the root to the very tip and glue them parallel to each other. The second surface is absolutely smooth for pressing down of eyelashes to the silicone pad.The measuring markings on this Tree Tool are a great guide to cut out the guessing game in order to determine the size of the rod or shield that will be required. Watch the video below for more detail.