Perhaps some of you have seen the new product line of category 0 implements being sold on E-Bay under the name Impact Implements. I recently purchased a box blade and thought I would share with everyone some pictures.
http://www.ebay.com/itm/Impact-Imple...JY~aQv&vxp=mtr
The box blade arrived unassembled, but it is simple to put together. One nice feature is it has a replaceable cutting edge. The six scarifiers are height adjustable and can be positioned so that it can be used as a blade alone.
There was only one flaw that I had issue with, that being the the Cat 0 pins do not have a hex base so that they can be held in place while tightening them. I just used a taper punch to hold it.
Overall, the box blade is rugged and well built. It is of heavy welded steel and powder coated.
I'll post some more pictures when I grade my severely neglected gravel driveway.