Hana ʻia ke kalapona kiʻekiʻe angular steel grit mai ke kiʻekiʻe carbon steel pana.ʻO nā kiʻi kila i ʻoki ʻia a hiki i ke ʻano grit granular a ma hope i hoʻohālikelike ʻia i ʻekolu paʻakikī like ʻole (GH, GL a me GP) e hoʻokō i nā noi like ʻole.Hoʻohana nui ʻia ke kila kalapona kiʻekiʻe ma ke ʻano he media no ka descali