The 50 mL repeating syringe adjusts from 0.5 mL to 5 mL in 0.5 mL increments, and features an easy-to-grip dose adjuster dial to make dosing changes easy. It features a heavy duty Tritan™ Barrel that is BPA-free, highly chemical and scratch-resistant, and has chemical compatibility that surpasses both polycarbonate and polypropylene. The amber colored barrel also reduces UV Sunlight exposure. The syringe includes interchangeable colored pull knob inserts that can quickly be exchanged to easily distinguish between medications. Used for antibiotics and vaccines. Sturdy and comfortable for repeat injections of livestock.