Black Stone Crusher Fines: : Mountain Stone Crusher Fines: : Class 6 Concrete or Asphalt Road Base: : Granite Road Base: : 1 ½" and ¾" Mtn Stone: : Cobble Stone 3"6" : 1 ½" and ¾" River Rock (multi color) : 1 ½" Concrete Rock: : ¾" Concrete Rock: : Ripp Rapp LM: