Yay for hammer designs. That is a metal hinge wedge, and it has magmotor drive, 4 razors and unfortunately weak armor. On the up side, it dominates shell spinners and VS/HSes without a wedge due to its enormous pushing power and overhead weapon. The reasoning for the large number on the end is from me experimenting with new and interesting wedge designs, and this one was best, but still isn't as great as I had hoped.