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Empty TWSBI 70ml glass bottle, not cleaned. Includes the insert for easy filling. The top of the TWSBI Diamond 50 Inkwell is also interchangeable with the top of these 70ml ink bottles, for another easy way to fill compatible pens. We suggest using water (and ammonia or bleach if necessary) to give the bottle a thorough cleaning. The bottles are randomly selected based on their availability. The color shown in the picture is representative and will not necessarily be what you receive. We\’re unfortunately not able to honor any special color requests.