Ideal's 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 lightweight high-impact plastic. Its transparent barrel is made of non-porous polypropylene, which will not discolor. Its simple dosage sleeve can be easily adjusted from 1 to 5 cc. This syringe has a non-adjustable nylon plunger assembly and a luer lock hub. The accurate 50 cc Pro-Shot syringe combines the features of Ideal's time-tested pistol-grip syringes, yet is economically priced. Replacement O-ring included.