Made of durable ABS plastic, high-quality construction, durable & easy to clean, never affect the flavors of your ingredients. Adjustable Measuring Spoon Set--Suitable for dry and semi-liquid ingredients. Adjust Measuring Spoon Grooved thumbprints help to move the sliders back and forth for accurate measurement. Slide cover to desired measurement and cover will click into place, angled edge makes precise leveling easy. Simply slide the adjuster to your desired increment and scoop. Replaces 9 measuring spoons. One end measures 0.5ml, 1ml, 2ml, 3.5ml, the other measures 5ml, 7ml, 9ml, 11ml, 13ml.