A nozzle for every job! The 30 ML Pour On from Prodigy Instruments is made of durable plastic construction with ergonomic design. High chemical resistant polyolefin cylinder. Designed with a fast-fill valve technology for a better feel when refilling with every squeeze. Fully adjustable dosages up to 30 ML by turning the dosage selector to the front of the o-ring on the piston to dosage line on barrel. Features a soft 3/8” wide and 54” long silicone tubing that helps fill faster. Convenient and attractive retail packaging.