Spring Bobbers such as Thill

[SDLAKES]

Hey guys I was just wondering how these things exactly worked
Link: [url "http://www.lindyfishingtackle.com/tackleshop/customer/product.php?productid=17784"]http://www.lindyfishingtackle.com/tackleshop/customer/product.php?productid=17784[/url]

So Im guessing it doesnt go all the way through the bobber you instead attach it to the spring? Anybody have a diagram or can make one. I guess I need these bead things?
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[davetclown]

I drew one up for you,

let me know if this helps
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