Tool | Perucci | Synthetic WigRock' n Roll! Tool by Ellen Wille is a show stopping short style adding a dash of excitement to your everyday look. The neckline and sides are beautifully cut and contoured to lay perfectly. This style features a premium synthetic fiber and a monofilament crown to add the perfect amount of extra volume. Anyone can rock this style! Tool by Ellen Wille is part of the Perucci Collection.