Made of high quality Borosilicate glass Conical shape for spill prevention Narrow Neck. Features interchangeable joint with a 29/32 socket size 500ml capacity. White graduation lines, marked every 100ml from 200ml to 500ml Perfect for any science or home laboratory 500ml capacity, narrow neck conical flask. White graduation lines, marked every 100ml from 200ml to 500ml. Features an interchangeable joint with a 29/32 socket size. No stopper included. Made of high quality borosilicate glass. Flask stands 6.5" tall and has a base measuring 4.2" in diameter.