Description: 【Figure 8 Design】: Fishing swivels, this double ring figure 8 design evenly distributes line tension, reducing the risk of line breakage due to uneven force 【Flexible Swivel】: Rolling fishing swivels and clips, quickly releases the line's rotational torque when a fish bites and struggles, preventing and knots 【Premium Material】: Rolling fishing swivels made of sturdy iron, it offers excellent strength, withstands high tension, resists rust and deformation, and is suitable for a variety of water environments 【Versatile Use】: Barrel fishing connector swivels are suitable for deep sea fishing, bass fishing, freshwater fishing, and saltwater fishing 【Package Includes】: Contains 50 pieces fishing swivels (10 each of sizes 4, 6, 8, 10 and 12) (Please refer to the size diagram)to meet various fishing needs and rig configurations. It comes neatly boxed for easy storage and portability Specification: Material: Iron Product Size: 12# 4# 6# 8# 10#(Please refer to the size diagram) Box Size: 9.6 cmx5 cmx1.6 cm/3.78 inchx1.97 inchx0.63 inch   Size Chart: Package Includes: 50 Pieces Fishing Swivels (10 each of sizes 12, 4, 6, 8, and 10) (Please refer to the size diagram) Note: Please allow slightly errors 1-2cm/0.39-0.79inch differences due to manual measurement.