Crystal Ninja Assorted Gluing Syringes and Tips Five gluing syringes (3ml) and five 14 gauge tips, five 16 gauge tips and five 20 gauge tops make up this perfect kit for embellishing with crystals and rhinestones. How to clean: Discard any left into the trash. Pull out plunger and let air out. Push a paper clip thru the syringe tip and one also into the end of the syringe to push out any left over glue. I only squeeze in 1 ml each time.. no need to over fill syringes and waste glue. These syringes and tips make applying many types of glue very easy. These are 3 ml syringes; easy to hold in your hand