Needles 21 (1 order Equals 14000 Needles)

The 21 gauge 1½ inch green needle is the largest commonly used gauge – the usual medical use is for intramuscular injection, especially of viscous substances (such as depot injections).

The 21G green needle can also be used for other applications such as aspiration of tissue from breast lumps for cytopathology (the study of tissue cells for the presence of disease).