1. Made of PC material, impact and solid, much ABS material and to use 2. High precision mechanical structure, suitable for almost all fishing hooks, fit for 0.8# hook up to 13# hook. 3. Easy to use, avoid fishing line damaged by hook. 4. Precision machine, tying is more evenly and tight, not easy to loosen. 5. Help you pick up a hook quickly, no longer ask for help, no longer hurt your hand, no longer time consuming. 6. Competitive level fine tying, can be directly used in competition. Specification: Battery: 2 * AAA (NOT INCLUDED) Suitable for fishing line: 0.1 0.2 0.4 0.5 0.8 1.0 1.2 1.5 2.0 2.5 3.0 3.5 4.0 Colour:Lake Blue Material:PC Size:8.4x6.5cm Package Contents: 1* Tied Hook Device Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.