Warning to Buyers , things change overtime. I purchased a lot of 2500, 2+ years ago and now I ordered another 2500. The diameters have changed. Ever so slightly. The new ones cannot be seated in original trays. Unless you press extremely hard and seat them. You will compress the snap ring, rendering them useless. The cap will not snap onto the product after removing from tray. The new ones can only be seated to the snap ring leaving a 3/16 inch gap at the end. After you fill them, you have to trim each one to get rid of the excess lip balm at the top. Seeing the lip balm cannot be seated completely in the original trays. You must purchase a new silicone trays that are flex fit, that accommodate the new diameter of the tubes. This is rendering your old trays useless unless you want to trim each lip balm after preparation.