30G 0.5" Needle. Sterile 100 bulk shart beveled tip needles have many uses around the home. Excellent for dispensing accuracte measurements of fluids including: epoxies, inks, oils, adhesives, solder paste, vape, and e-cig fluid. These are sharp, are sterile, and are for the purpose of hypodermic injection. Our manufactured blunt needles provide a smooth, burr-free needle edge to prevent damage or injuries. The lower the needle gauge, the larger the needle. For applications with very thick fluid, use a low gauge needle.The lower the gauge the thicker and larger the barrel. 18g would be applicable for drawing meds. 30g is very thin and tiny barrel for easy injections.