Five see through containers with different heights, width and base areas allows colour and texture to be used to good effect in experiencing volume. Four holds one litre of liquid or solids while the fifth is a 500cc cylinder for more accurate measuring. Graduated marks are on each container. The graduated beakers have tapered spouts with easy to read raised markings. They are a valuable tool for measuring volumes of 50 ml up to 1000 ml. All containers are durable plastic.