Sold by the level scoop. Approximately 1 ton.
 
This is limestone gravel mixed with crushed limestone, also referred to as CR610. This mixture packs down really well and is great for using as a driveway or parking pad base. As it packs down and watered it becomes quite hard and provides a base that does not sink into the mud. Also very effective when used as a patch for pot holes in gravel or asphalt driveways.