Quantity and capacity: 300 white transfer pipettes can absorb 3 ml of liquid, which is convenient and easy to use. 15.5 cm (length), the diameter of the suction ball is 4.8 mm and the length is 1.9 cm. material: the dose straw is made of polyethylene, which is a chemically inert and non-toxic material and very heat-resistant. Press the top to inhale and slowly release the bottle. Can be used without hesitation. Easy to use: These pipettes are soft, curved and have clear and readable marks. Plastic straws save time and mix spices, and are perfect for transferring and storing essential oils, cosmetics, perfumes, trace liquids and more. Multi-: suitable for abstract painting, feeding small animals, measuring and transferring essential oil, , other beauty products and experiments. Product description: Plastic laboratory experiment, essential oil and classroom experiment of transfer straw Product details: The suction pipe on the outer wall is engraved with the scale of accurate suction pipe volume. Total volume: 3ml Size: about 15.5 cm (length), suction cup diameter is 4.8 mm, length is 1.9 cm. Color:Transparent Material: Plastic Package Contents: 300 pcs x disposable plastic straws Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is 1-3cm.