About 1/16 diameter or so. About 9-18 mesh
Entech is my source.
Www.Entechcrumbrubber.com
2-1/2 cubic yard sack
Approx 2100 lbs
Not sure about current price
Yes ideal. Driving on it is not for the all wheel drive but pushing digging and dumping is great.
They have one step finer and several more coarse.
An alternative is with litter. Tends to pack a bit so driving is better, but the dust is gritty and harder on our equipment.
FYI shipping will cost your more than the material itself.