18/8 food grade stainless steel without BPA and could be used for any food, rust resistant, will not be polluted or eroded, make your cooking always safe and health. One-piece integrated (no welds) steel design keep it sturdy without break case, wide handles to allow even clumsy fingers to hold tight, and smooth edge eliminate the concerns of the hand injured. Conveniently nests inside one another design and steel ring allowing you to store them in any drawer, cabinet or cupboard. Simply Wash with soap and warm water or load them into the dishwasher for fast cleaning. This measurement sets includes 1/16 tsp(0.33ML), 1/8 tsp(0.63ML), 1/4 tsp(1.25ML), 1/3 tsp(1.67ML), 1/2 tsp(2.5ML), 3/4 tsp(3.75ML), 1 tsp(5ML), 1/2 tbsp(7.5ML), 1 tbsp(15ML).