Monoject Syringes without Needles are larger or specialty syringes. Needles are not included. Choose from Regular Luer (RL) or Luer Lock (LL) syringes. Regular Luer (RL) means the needle pulls off. The syringe has a tapered tip so it can also be used as an oral feeder. Luer Lock (LL) means the needle twists on and off for a more secure fit. However, the syringe cannot be used for oral feeding.