well you can really feel the heavy ness of a 6 gauge pyrex that is pyrex but its more like 12 gauge---they get real hot in the bowl use TOOTH picks to clean it out dont use metal it will bust it ---hope you like it --i really dont care about looks --i have bought some 200 300 dolar bowls and they suckd to smoke out of but lookd cool LIKE THIS ONE below
its definetly a heady peice BUT DOESNT SMOKE WELL AND HARD to clean
i have had a few like yours they are great --i fill them with water and put it in the freezer till almost froze them pack it up !!!!