Gutondekanya ibice bigizwe ahanini na base, inkingi enye, igikombe cyo gutondekamo ibirenge hamwe no gutondekanya ibirenge, mubisanzwe bifite ibikoresho byinjira, insinga zinsinga, ibyuma byuma, cyangwa ikibaho.
Gushyira rack hamwe ninziga nubwoko busanzwe bwa stackable racking hepfo ihuza ibiziga, byoroshye kwimuka.