Package & Size: You will receive 6pcs different inner diameter blunt tipped dispensing needles. Size measurement: 312mm/12.3inch long. tube: 300x1.28/1.64/2.1/2.8/3.5/4mm, inner diameter: 8/10/12/14/16/18G.Different Sizes to Match Your Needs: The larger the inner diameter the thicker the liquid can be matched, the smaller the inner diameter the thinner the liquid can be adapted. You can choose the corresponding size according to your needs.Safe and Reliable: Made of Stainless steel, not easy to rust and built to withstand multiple uses and tough conditions. Each needle ends in a blunted tip for safety during handling, and the connector ensures a secure and leak-free connection to syringe.Extened Reach: Simplify small parts and area cleaning with an extended 312mm/12.3 inch reach. Access hard-to-reach places while maintaining perfect control of the flow of your syringe contents. Professionals and DIY enthusiasts alike will find their unique dispensing tasks simplified and improved.Wide Application: They are industrial dispensing blunt needles that can be used with a variety of adapters and great for essential oil, science lab, flat back rhinestones, hobby crafts, home or industrial precision applications of glues, inks, perfume, lubricants, sealants, etc.