China Sterile Syringes For Insulin For Single Use Safety Sleeve Manufacturer and Supplier Kindly Monoject Syringe with Needle Luer Lock Leedstone Patient Guide to Self Administering Vitamin B12 Injections Southmead Surgery BORUZU Route of Administration Jensen Global JG12 1.5HP High Precision Series 12 Gauge Needle Blue Bag 1000 Choosing the right needle is about matching the gauge and length to the specific task, whether it's a quick vaccination or drawing blood. Here is a simplified breakdown of the most common needles used