Very heavy sherlock and high quality. Fumed tubing for color changing. This bad boy stays perfectly still and does not roll over. In addtion to its antiroll beads, it also has a flat surface at the bottom, thus making it very stable. Each pipe is fumed for a color changing experience. Your pipes look will change colors after every smoking session. You will see it evolve into a new piece slowly over time. Cleaning your sherlock pipe will reset it back to the way it was when you first got it, allowing you to color change it all over again!