HDPE cluster tube ni ubwoko bushya bwa micro-kabili irinda amaboko, ihuza 7-umwobo 25/21 sub-tubes muburyo runaka.Igice cyo hanze kigizwe na 3.0mm ndende-yuzuye ya polyethylene, ishobora kwakirwa mumwanya muto.Ibyobo byinshi hamwe no kurinda sub-tubes.