Akwatin pallet ɗin ƙarfe za'a iya raba zuwa kejin ma'aji mai naɗewa da kejin ma'ajiyar walda.Gefen kejin na iya yin ta da ragar waya ko farantin karfe.
Har ila yau, ana iya sanya wa rumbun ajiyar hawaye suna racking ɗin ajiya, wanda ya ƙunshi firam, katako, bene na waya, ana amfani da shi sosai a yankin Amurka.