Website: PBTools4u.com This is a spring activated Grizzly Bar Screener. It has 2.75" openings and will remove most material 2.5" and larger leaving soils that are easy to work with and not having to truck rocks to and then from the jobsite. It does not require dry soils to work but is much more efficient when they are. It had just finished raining a few hours before this video was taken, and you can see all the puddles/ mud the machine is driving through. With the spring action dumping faster and harder just makes is work better. It loves large rocks! Lightweight construction but doesn't bend over time like a traditional, rigid grizzly screener. Link to purchase: http://www.ebay.com/itm/181723221424?...