1. He pai te tukatuka, kaore he piri ki nga taputapu mira, he pai hoki mo te mira a-ringa, ka taea e te karauna niho kikokore te tae ki te 0.3mm.
2. Tukatuka i roto i te tikanga motuhake, tino whakakore i te ahotea o roto, te deformation i roto i te machining kua heke nui.
3.High ira whakarewa, e kore e rewa na te nui o te pāmahana i te wa e mira ana, kaore ano hoki e whakararu i te mahi miihini na te nui o te rewa.
4.Excellent taonga anti-static, ngawari mo te tukatuka me te horoi.
He pai mo te hanga niho u i roto i nga mahi whakaora niho haumanu.
Ko te diameter ko 98mm ranei 95mm rite tono, matotoru he 10,12,14,16,18,20 me 25mm.