This useful file is for smoothing out the depression in which to set the string and rattan.
Size Withd 6mm, Made in Japan
Joint Forming Tool-L, ¥8500
Wooden Joint Section Insert S, ¥800
2-rin rattan (width:0.6mm), ¥11500
3-rin rattan (width:0.9mm), ¥10500
Wooden Joint Section Insert M, ¥900