Ideal's 50cc Pro-Shot pistol-grip syringe was engineered for the cost-conscious producer who doesn't want to sacrifice accuracy for price. Pro-Shot is built from high-impact plastic to be both durable and lightweight. Its transparent, graduated barrel is made of nonporous polypropylene, which will not discolor. Its simple dosage sleeve can easily be adjusted from 1 to 5 cc. The syringe has a non-adjustable nylon plunger assembly and a leur lock hub. Replacement O-ring included.