[Model] 0.5ml/CC - 31G - 6mm | [Specification] Individually wrapped, pack of 20 | [Premium Quality] Made of high quality industrial grade material. Thickened barrel, precise scale, smooth and durable. | [Multi Purpose] The product can be used in multiple scenarios such as industrial, scientific research, laboratory so on. It can also be used for a variety of liquids, such as ink, glue, paint and so on. | [Note] This product is not a medical product. If you're not satisfied, let us know, and we'll make it right.