The system that has become the standard by which all other extension systems are judged has put extension services into the mainstream! This still unrivaled system produces results simply not possible with any other system. The Great Lengths 3200 applicator tong is heated on one side. The temperature, which is approximately the same temperature as the lowest setting on a standard curling iron, is used to soften the Great Lengths bond so it can be molded to your natural hair. Unlike other systems, where glue guns and wax melting pots are used, the 3200 applicator allows for a very clean and precise application. The result is undetectable attachments that are brushable, durable and, most importantly, non-damaging to your natural strands.