Positive plunger stop allows for maxiumum filling and eliminates costly spills. Tapered plunger shaft permits one-handed operation. Luer slip syringes allow for easy syringe removal from needle and easy needle replacement. Reinforced tip reduces breakage. Tri-seal o-ring reduces leakage and provides accuracy. Size is 35 Cc/30 Count. Dimensions are 7 X 12 X 4 UPC Code = 726087088914