Vaxxen Labs U100 1mL 1cc 29G x 1/2" (8mm) - Box of 100 - A U-100 insulin needle is a specialized syringe designed for the precise administration of insulin to individuals with diabetes. The "U-100" designation indicates that the insulin concentration is 100 units per milliliter, which is a standard strength for many insulin types. This needle features a fine gauge for minimal discomfort during injection and is calibrated to measure doses in units, ensuring accurate delivery of the insulin dose prescribed by a healthcare provider. The design typically includes a protective cap for safety and hygiene, and the needles come in various lengths to accommodate different body types and injection sites.