Caution: color: according to the color of the first picture, in the package: if the quantity is not stated in the description, the item according to the quantity and model in the title. 10Pcs plastic centrifuge tubes laboratory test tubes with lid 50ml the product is based on the color or size of the main image of the product page. The description: the hinged lid helps prevent accidental lid opening and allows the lid to be opened without contamination. Well made with polypropylene which is very resistant to chemicals, mechanical stress and temperature. Manufactured without the use of slip agents, plasticizers and biocides - substances which have been shown to escape from plastic consumables in the sample and which negatively affect bio- results. Trial. Precise lid sealing for lowest evaporation rates during long term storage. Designed with graduations help provide an accurate reference, perfect lab supplies. Specification: material: plastic color: as picture shown 10ml size: approx. 16 X 105mm / 0.63 X 4.13Inch 15ml size: approx. 16 X 114mm / 0.63 X 4.49Inch 20ml size: approx. 21.3 X 104mm / 0.84 X 4.09Inch 50ml size: approx. 29 X 115mm / 1.14 X 4.53Inch the package includes: 10 centrifuge tubes