Automatic self filling syringe designed for injector drencher and pour on applications with adjustable dosage settings from 5 mL to 30 mL. Features an easy set dial a dosage system with a clear dosage window for accurate measuring and delivery. Includes interchangeable tips for multiple application types along with a removable barrel for convenient cleaning. Built with a durable plastic design and comfortable V grip handle for high volume use. The amber colored barrel helps reduce UV sunlight exposure while the replaceable front valve and spring feature a secure lock in place design for reliable performance.