Glue like a pro with these luer loc tips from the CRYSTAL PRO series by Dreamtime Creations. To insert, simply twist the tips onto your CRYSTAL PRO Syringe. Now you are free to glue with ease and comfort.These 18ga Blunt tips will fit securely onto your gluing syringes. This 18ga size is perfect for thinner glues like gemtac, Dreamtime Adhesive or Fabric Tack. 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.