Sisikhokelo sokukhokelela esisekwe kumgangatho oqukethe izinto zokuthambisa zangaphakathi nangaphandle. Isetyenziswa ukuvelisa imibhobho PVC. Ibe
intsebenzo egqwesileyo yokwenza ikhalenda yokubumba. Ayizukubonakalisa ukucaba, ukuqaqamba nokucoceka, kwanobungakanani bemveliso xa izinto ezizaliswayo zinokuguquguquka. Rhoqo, akukho mfuneko yokongeza ezinye izinto zokuthambisa.