EXTENDABONE, Made in USA IS AN INVENTION BORN OUT OF NECESSITY. EVEN THE MOST DEDICATED YOUNG TROMBONIST IS NOT GUARANTEED TO GROW ENOUGH TO BE ABLE TO REACH 7TH POSITION.
 
小朋友學長號但係吹唔到第7把位? 用Extendabone啦!
我地HKME獨家代理左係美國生產既Extendabone, 佢地用左100％可回收塑料。
簡易既安裝,一"卡"就可以"卡"上長號滑管上面,輕鬆拉到身7把位!