Exel International Hypodermic Needles

Hypodermic needles are used to inject substances under the skin or into a body cavity. They are made of a sharp, hollow tube of steel, aluminum, or plastic, with a sharp point on one end and a small opening at the other end. When the point is inserted into the skin, the opening is placed over the vein, and the substance is injected by pushing down on the plunger.