How can you tell the size of a hypodermic needle? All Hypodermic Needles or Syringe and Needle will be packaged in Individually wrapped, sealed, sterile packaging. Each Hypodermic Needle will have a translucent hub which represents a specific size or gauge of needle.
How can I tell the difference between a large needle and a small needle? A needle with a “low” number such as 16 or 18g will be a very thick needle, with a thick gauge. A needle with a “high” number like a 25 or 27g will have a much thinner needle, with a thinner gauge.