Preemo Helix Bowl • Flame-polished joint • Worked roll stopper • Joint: only 14mm • Height: 2 inches Clear bowl with worked helix color glass throughout the roll stopper. A beautiful accessory for your glass always makes your experience a little more pleasant, especially when it is thick quality construction. The flame-polished joint eliminates any 'sticky' situations, giving you a smooth experience. Available in different color combos.