This is a Wobbler similar to the Turus Ukko, it has a very good action, if you balance it right. I already catched some pike with it. You can scale the wobbler as you need it in Cura or any other printing software. I I glued the two printed halfes together with some filament and a soldering iron. There are two versions included, which have different places for the weights. The second version can be scaled down better in cura. To find out the best weight distribution you can put weights in the unglued lure and fix it with some wire or rubber bands and put a dowel in the nose.