主要用於馬林巴琴與鐵琴，其特色在於相較於毛線纏繞的琴弦，能呈現更為清晰的音粒表現。即使採用扁平狀琴芯，通常纏繞毛線後仍會形成橢圓形，但我們透過增加一道工序，精心設計使其呈現自然的球狀。
No. 211: For Marimba, Xylophone, Vibraphone and woodblock
No. 212: For Marimba, Vibraphone
No. 213: For Marimba, Vibraphone
No. 214: For Marimba, Vibraphone
No. 215: For Marimba, Vibraphone
No. 216: For Marimba, Vibraphone
Length: 37cm