The Bucky Bug has a beaver or bug shaped body, claws and long tentacles. We've worked really hard to get the action on this bait perfect. As you can tell by looking at it, it really has a lot going for it.
The major difference between the 3.75" and 4.25", besides the size, is that the head and tail are jointed like the Birch Bug. This is a small difference but further enhances the movement of the claws and tentacles.
I have tested this bait extensively and it is awesome. I'm not going to give any additional detail about the results - because you'll think I'm telling you fish stories. I'll just say this, I'm hooked on it in a BIG way. It will definitely produce both quantity and quality.
Bill made a great video showing the claw action of the Birch / Bucky Bug:
http://youtu.be/EF-WatQcJ5s Available in 1 or 2 cavities.