Features: One-piece center, made of 304 stainless steel as a whole. Knotted quickly, the material is smooth and does not hurt the line, and the hook does not hurt the fish. Smooth and not hurt the line, go straight to the hook without fear of deep throat. Knotting device and decoupling device are three in one, which can reach the hook without hurting the fishing line. Fast knotting and easy fishing, smooth ABS material, does not hurt the fishing line. Tighten the strand and push the sleeve into the thread port along the thread; keep the strand tension, and gently push after touching the hook to release the hook. Specifications: Material: Stainless Steel+ABS Weight: Approx. 20g Color: Blue/Red/Red+Blue Handle Width: Approx.5cm/1.97in Total Length: Approx.17.3cm/6.81in Quantity: 10Pcs Package Includes: 2 x Fishing Knot Tying Tool note: Please allow 1-2cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!