Piston Syringes. 70cc syringe features double-flanged plunger tip to ensure adequate vacuum, as well as a thumb ring and smooth piston action for easy one-hand use. Single-use, sterile. Piston syringe barrel has 2cc graduations for accuracy. Luer adapter tip allows inflation of Foley catheter balloon. Piston (Toomey) - 70cc piston syringe barrel fits all standard cystoscopes or resectoscopes. Single-use, sterile. Double-flanged plunger tip ensures adequate vacuum. Thumb-ring plunger and smooth piston action permit easy one-hand use. Catheter adapter tip allows irrigation of Foley catheters. Luer adapter tip allows inflation of Foley catheter balloon.