1. Material: stainless steel + ABS2. The main fishing line can be quickly circled, and the hook can be quickly taken out along the line3. The head adopts a spiral design and guides the hook in the mouth through the fishing line to achieve the purpose of quick decoupling.4. Quickly tie knots without hurting the thread5. No harm to fish, easy to decouple6. Dimensions: 17.3x5 cm7. Weight: about 9.9 grams

http://olla.gr/3-in-1-knotted-and-tied-fishing-hook-fishing-tool-multifunctional-hook-retractor-red-handle/