2ml Unifix Reduced Dead Space Luer Slip Syringe barrel.
This quality 3 part syringe has a spike on the gasket that fits inside the tip of the syringe to reduce the residual fluid volume after injection.
The displacement spike reduces the amount of medicine or blood that can remain in the syringe after use compared to a standard needle and syringe with a luer attachment by approximately 50%. This is because, although it almost completely eliminates dead space in the syringe, half of the dead space in needle-syringe combinations is in the needle hub.