Extra strong string to wind, for instance, into the depression around the middle joint. Dia.:0.75mm,length:300m. Material: Vinylon (artificial fiber)
2-rin rattan (width:0.6mm), ¥12650
Middle Joint Rasps A+B, ¥19580
Middle Joint Insert Tools A&B set, ¥11550
Joint-Forming Tool SET, ¥23650