Extra strong string to wind, for instance, into the depression around the middle joint. Dia.:0.75mm,length:300m. Material: Vinylon (artificial fiber)
Joint-Forming Tool SET, ¥23650
Middle Joint Rasp B, ¥10230
Mentori 3-rin (width:0.9mm), ¥14740
Middle Joint Rasp A (With Handle), ¥10230