Extra strong string to wind, for instance, into the depression around the middle joint. Dia.:0.75mm,length:300m. Material: Vinylon (artificial fiber)
Middle Joint Rasp A (With Handle), ¥10230
Mentori 2-rin (width:0.7mm), ¥14850
Wooden Joint Section Insert L, ¥1100
Wooden Joint Section Insert M, ¥990