Extra Strength MagnetsMagNaturals are locked against terrarium glass with Mega Magnetic Power!Large Magnetic Powered Rock Ledge. Perfect for all reptiles, amphibians and invertebrates up to 2 pounds! Take advantage of the vertical terrarium climbing space as well as giving your terrarium pet a natural outlet for their climbing behavior. MagNaturals Rock Ledges will create a beautiful, natural and beneficial addition to your pets environment.Size 13" x 8"