The built-in steel balls may buzz when the lure swims. Such sound can attract the attention of fishes and trigger more bites from them.
4. Eyes: 3D design. They are realistic-looking. 
5.Metal connection

The metal connection allows it to withstand strong bite forces.
6.The fishing lure is segmented into multiple pieces, which enables it to wiggle like a real fish. You can easily catch a fish as the vivid motions will attract more attacks.