Glyptic- Modeling HandlesThe brightly colored anodized aluminum handles help you to quickly identify tools easily. Each handle comes with an allen wrench for easy loop change. Cutting Trimming loops are sold separately. Handle A (Orange Large) 6" Handle with single end use with large, cutting, and trimming loops. Handle C (Blue Medium) 6" Handle with double end use with medium, large, cutting, and trimming loops. Handle E (Red Small) 6" Handle with double end use with small