The Dynarex Syringes Without Needle can be used with any size needle with either a Luer Slip or Luer Lock connection. These syringes offer a full range of clear barrel syringes featuring easy to read markings, for a transparent view of the contents for precise dosing and readability. Users can draw up an accurate dose of medication between 1 cc and 60 cc. The Dynarex Syringes have a smooth-gliding integrated plunger, helping prevent the plunger from being pulled out, as well as providing exceptionally smooth draw.