Mā tā mātou tukanga whakaputa ka whakamahia ngā mīhini hurihuri maitai koranu boron me ngā mīhini taumaha hei whakarite i te tika o ngā āhuatanga, ā, ka oti katoa ngā hua te tinei me te whakamahana i te pāmahana teitei. Ko te pakeke o te mata kei waenga i te HRC 48 ki te 56, me te hohonu kei waenga i te 6 ki te 12 mirimita.
