Medical double-sided needle (type 3) for venous blood sampling according to TU 32.50.13-002-34102723-2019, standard size in mm:

The needle is a sterile hollow tubular metallic instrument with a sharp bevelled edge, intended to be used as part of a blood collection kit directly to obtain a blood sample from a patient. View 2 comprises the elements: a needle (with one end for insertion into a vein and the other end for puncturing a plug), a centre section, a protective rubber band, a lower cap and an upper cap. The needle (with one end for insertion into the vein and the other end for puncturing the plug) is fixed in the centre portion. The bottom of the centre part or the centre part on the needle side for puncturing the cork has a thread for inserting a holder. A protective rubber band is placed on the cork puncture needle. The vein introducer needle is coated with silicone oil. The vein insertion needle has a double oblique cut at the end and a triple lance-shaped sharpening.