These are the TRUEplus syringes, 30G 0.3CC 5/16In. For your comfort, these feature a silicone coated needle with a precision-cut, tri-beveled needle tip. These are the shorter style needle because they are 5/16th inch needle. This syringe will hold up to 30 units. Use once and discard of in an appropriate container for sharps. Please keep out of the reach of children.