Soo hel noocyada kala duwan ee tareenada simbiriirixan ee telescopic iyo kuwa toosan ee ay samaysay Compex ee khaanadaha. Buug-yarahayaga alaabta dhaqdhaqaaqa toosan wuxuu bixiyaa hagitaanno kordhin qayb ahaan ama dhammaystiran, oo laga heli karo dhaqdhaqaaqyo kala duwan iyo astaamo socod siman.
Iyada oo lagu garto saamiga tayada/qiimaha aadka u fiican, biraha simbiriirixan ee toosan iyo kuwa telescopic-ga ah waxay ka samaysan yihiin bir aan miridh lahayn ama bir galvanized ah, waxayna si gaar ah ugu habboon yihiin soo saarista khaanadaha warshadaha waxaana badanaa loo isticmaalaa alaabta guriga ee xirfadlayaasha ah (tusaale ahaan jikooyinka xirfadlayaasha ah).