One Tiny Might stem measuring approximately – 130mm Stem Wall Thickness - 2.5mm Internal Glass – 1 piece clear borosilicate mass Bowl Capacity – Medium Will come with a preformed screen. Big stem, lots of mass, designed for maximum cooling and wide-open airflow for those who want back-to-back bowls or who want to minimal heat on the back of their throat. These stems are large and protrude a fair way from the unit so in my head they aren’t travel stems due to the increased footprint of the unit. Trading bowl capacity for sheer presence the 2.5mm glass in these stems adds a substantial amount of mass to the whole experience. Are these physically tougher then the 1mm thin walled stems? As much as I would hope so its still glass so concrete floors etc will not work well for it but otherwise it’s a firm “maybe”. Tiny Might unit for illustrative purposes only All Stems have tested to fit on my personal devices Grasp stem in the centre on an undimpled section and insert straight into the opening, if you find there is more resistance from your devices o-ring than you expected apply a small amount of water for example to the end of the stem and retry. Don’t not waggle from side to side or twist while inserting stems. All stems are washed after the kiln and then dried in the oven to minimise water stains but I do live in a hard water area so some stems may have some marks, these will wash off when you rinse the stem before first use. I'm trying different ideas to prevent this currently so hope that I can delete this section soon.