Sold in a 2 pack is Aquarocks latest product!! (2) 3x3x3, using reef safe materials and sealed Neodymium magnets rated to holed strong to half inch glass! Small detritus escape holes hand drilled in the bottom.
AquaRocks frag rock creations are made to hold to half inch glass officially. For glass above that thickness, AquaRocks can outfit any of our rocks with our premium 2″ suction cups at request.