Pour-On Gun for use with 2.5 liter, 5 liter, 10 liter and 20 liter sizes of Eprinex Pour-On; and 2.5 liter and 5 liter sizes of Ivomec Pour-On. Adjusts from 5-65 ml in 2.5 ml increments. Clear poly barrel is marked with proper pour-on cattle dewormer dosage up to 1,430 lbs. Adjustable tip of pour-on nozzle allows pressure to be set. Includes 9' draw off tubing.