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-L, ¥8470
Joint-Forming Tool-M, ¥8470
4-rin rattan Corner-cut (width:1.2mm), ¥8250
Mentori 3-rin (width:0.9mm), ¥14740
Middle Joint Rasps A+B, ¥19580