This solid rod implosion measures 1.34 inches in diameter. This was one of my first experiments with milli and solid rod implosions. Some things worked some things did not. 😂 Full disclosure a little air got trapped on the surface of some of the Milli and latticino snd the center shifted on me leaving “The Gap” in the center. Being flawed it’s cheaper than the ones that are not on the site but still a great marble to be honest. It includes my sunshine milli , Star cluster milli and marching latticino cane: lots of blue spruce, cadmium yellow and orange and backed with tele magenta. Free marble stand and free shipping through my web site right now.