The ca. 40cm tall glass bong TX Burner 3.0 from the Blue-Line by Weed-Star has got an 18,8mm cut.
Its ca. 43mm wide tube is bent, what preserves the eyes from acrid smoke. Through the turbulence from the slit diffuser in advance, the smoke already is nicely mellow, and cools down a bit, too.
Moreover, the TX Burner 3.0 has got a carb hole. A little Weed-Star bowl is included, too.
Height: ca. 40cm
Diameter (tube): 43mm
Diameter (round base): 11cm
Wall thickness: 3,2mm
Length (diffuser): 15,5cm