ʻO ROCKBEN kahi ʻoihana kūʻai waiwai nui a me ka mea hoʻolako lako hale hana.
Hoʻohana ʻo ROCKBEN i ke kila kila kila 304-grade no nā huahana hale hana kila kila i kuhikuhi ʻia, me ka mānoanoa o nā mea i koho ʻia e like me ka ʻāpana a me ka noi. No ka laʻana, hoʻohana kekahi koho papa hana kila kila i kahi ʻili kila kila 304 1.0 mm-mānoanoa me ka mānoanoa o ka papa hana he 40 mm. Hoʻohana kahi papa hana kila kila i kahi kumu paipu huinaha kila 304 40 x 60 x 1.5 mm. Ua hōʻoia ʻia nā māka pololei, nā mānoanoa a me nā hoʻopau no kēlā me kēia huahana.