Kei roto i te tika o te peera te tika me te hurihuri. Ko te tika o te ine he kaupapa e whakairihia ana ki runga i ngā pou, kei roto ko te diameter o roto, te diameter o waho, te whānui, te manawanui rahi o te chamfer, te uara rānei e whakaaetia ana. Kei roto i te tika āhuahanga te rerekētanga diameter, te rerekētanga diameter o roto toharite, te rerekētanga diameter o waho, te rerekētanga whānui mowhiti diameter toharite i roto i te papa radial kotahi. Ko te tika hurihuri ko te Pendulum hurihuri, tae atu ki te mowhiti o roto me te mowhiti o waho me te rere axial, te taha o te mowhiti o roto me te whānuitanga manawanui mata diameter o waho. Ko te tohu tika o te peera mai i te tohu whānui 0 ki te 6, 5, tohu 4 me te tohu 2, kei raro nei te ripanga whakatairite i waenga i te akomanga o mua o Haina GB 307 me ētahi atu paerewa tika. Ko te tohu tika o te peera nui mai i ngā taumata tohu 6, 5, 4 me te 2 o ngā tohu e whā. 

Ko te mowhiti o waho 11, te mowhiti o roto 12, me te pōro 13, arā, he wāhanga e mau ana i te 0.95% papatipu, neke atu rānei, me te 1.10% papatipu, iti iho rānei o te waro, 0.05% papatipu, neke atu rānei, me te iti iho i te 0.3% papatipu, silicon, 0.10% papatipu, neke atu rānei, me te 0.50% papatipu. 11A o ngā ara reihi mowhiti o waho me te 12A o ngā ara reihi mowhiti o roto, ko te mata he mea hanga ki te maitai, he mea hanga ki te konupora, 1.30% papatipu, neke atu rānei, me te 2.00% papatipu, iti iho rānei, ā, he mea hanga ki te maitai, he toenga rino me te poke, me ngā hononga ki ētahi atu wāhanga. Ko te kukū hauota toharite i roto i ngā rohe paparanga mata 11B, 12B, me te 13B, arā, ngā rohe kei roto i te hohonutanga o te 20 μm mai i te mata hurihuri pōro 13A, he 0.2% te taumaha, neke atu rānei, me te 0.7% te taumaha, iti iho rānei, ā, i roto i ngā rohe paparanga mata 11B, 12B, 13B, e 5, neke atu rānei ngā waroiti me te diameter o te 0.5 maikiromita, iti iho rānei, kei roto i te 100 maikiromita.