I applied abalone to a Hitotoki Works S16DR-7.5 (S). The inner diameter has been expanded to 8mm with a reamer to match the blank I plan to make. I made it, but the black one better suited my production image, so I no longer need this one. I'm listing it as "like new" considering that it has been lightly fitted and is a modified item, but it has not been glued, so it is essentially brand new. After applying the abalone, I sealed and built it up with epoxy, and then applied a final coating of two-part urethane. It should fit a Fuji pipe seat if it's a size 16. Please refer to images 3 and 4 for installation examples. Please forgive any imperfections as this is amateur work. Please use it for your rod building projects.