Stacker 60 hole gridline 28" and taller *clear or fume optionsThis tube can be done in all clear with optional color bridge name marble or with silver fume. 18mm hand made, hand ground female. Height ranges from 27 29" tall. Made on Schott 50x5mm tubing. This item has several upgrades and addons that can be applied to the piece, In addition to your piece, each desired upgrade must be added to your cart. Perc option 1: This tube is made with the single 60 hole perc, If you want the dual 120 hole you can purchase