the only reason why it was given stars as opposed to star is because it fit nicely in my invisalign container [SEP] this tool is unusable i was not able to get either side under the edge of any part of my trays to even attempt to aid in my pulling them out as it is just too thick the only reason why it was given stars as opposed to star is because it fit nicely in my invisalign container i threw both tools away do not waste your money