MagNaturals are locked against terrarium glass with Mega Magnetic Power!Reptile Dripper - Granite GreyProvides moving clean water for all terrarium pets. Tropical and forest dwelling animals are stimulated to drink from leaves, branches and rocks similar to their natural environemnt. MagNaturals Reptile Dripper has a secure top that keeps terrarium pets and feeder insects out of the water. The control valve lets you regulate the water flow. Additionally MagNaturals Reptile Dripper helps to increase humidity vital to tropical inhabitants. Molded in the same colors as all the MagNaturals line.Size 5.5" x 4.5" x 9" Tall