Bullet cigar ashtray, can choose up to 4 different calibers to insert. Recommended for art decoration purposes but still can function as an ashtray. This is not glass but a very hard polyester type resin so it still has the potential to melt and discolor if a lit cigar/cigarette is left on for long. Designs are endless. If no calibers are requested, by default you will receive whatever calibers are available at the time of creation.