Magnaturals Reptile Water Dripper Mojave - Magnetic Decor Hold 2 cups of water. 2nd valve included. 100% non-toxic materials. Made from Polyurethane Foam Resin. Easy to clean. Magnetic force guaranteed for life. Works on habitats with glass up to 1/4" thick. Maximize terrarium space. Install or relocate in seconds. No glue or velcro.