Features: There are 4 types, 5/10/25/50ml, choosing according to your needs. Thick glass, acid and alkali resistant, with good stability. Wide for rim and a tapered pour spout for easy filling and pouring. Heavy duty reusable single metric high quality, Can be reused after cleaning. The best gift for experimenters, perfect for school projects, home labs , Halloween theme parties or science-themed birthday parties. Specifications: Material: Glass Size 1: 190x24mm/ 7.48x0.94 in (50ml) Size 2: 162x19mm/ 6.37x0.74 in(25ml) Size 3: 135x14mm/ 5.31x0.55 in(10ml) Size 4: 120x11mm/ 4.72x0.43 in(5ml) Class A tolerance 0.50ml Note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x Glass Measuring Cylinder