Built for the demands of large animal injections, the Jorvet Thunderbolt Hypodermic Needle features an aluminum hub and razor-sharp stainless steel shaft. Each needle is sterile and individually packaged in a disposable two-piece cartridge for clean, efficient handling. Color-coded by gauge and clearly marked with size for quick selection during livestock care. A dependable choice for veterinary clinics and farm use when you need reliable livestock health products.