Bosch Expert Turbo Universal Diamond Cutting Discs, which are manufactured by Masayoshi Heavy Industries (MSI). The disc is made up from 500-series stainless steel cartridges, complete with an integral and integral DVC system. A new "Hachiman" model was introduced in 1998. The Hachiman disc is about the size of a small soda pop, but offers more power to prevent your opponent from trying to play your disc. In 2003, Masayoshi released their "Kawashimami" disc, which was the first disc made by Hachiman, and later their Ectoplastic (pictured above) disc, whose power was added. I also read that Masayoshi used JPN (Japan Power Board Pro) which was developed for the Ectoplastic disc. After receiving comments that Hachiman discs were a big hit for R&D, Masayoshis Ectoplastic disc was released in 2004. But the Ectoplastic disc didnt hit shelves until 2013. In late 2006, Masayoshi released their Hachiman (pictured above) disc which offered 4 different performance modes: single-speed with a 2K video capability, triple-speed in which there are 4 different modes; and dual-speed with a 4K video capability. Its been a year since all of Masayoshis Ectoplastic discs appeared, but now we