ʻO ka wili hāmare ka wili wili i hoʻohana nui ʻia a ma waena o nā mea kahiko loa.ʻO nā wili hāmare he pūʻulu hamare (maʻa mau ʻehā a ʻoi aʻe paha) i hoʻopaʻa ʻia ma ke kumu waena a hoʻopaʻa ʻia i loko o kahi pahu metala paʻa.Hoʻoemi ʻia ka nui ma muli o ka hopena.
ʻO nā mea e wili ʻia e paʻi ʻia e kēia mau ʻāpana ʻāpana ʻāpana o ke kila paʻa (ganged hammer) e kaʻa ana me ka wikiwiki kiʻekiʻe i loko o ke keʻena.Ke neʻe nei kēia mau hāmare kowali loa (mai ka ʻau waena o ka ʻauamo) i ka wikiwiki angular kiʻekiʻe e haʻihaʻi ai ka mea hānai.
Hoʻolālā maikaʻi e hana i ka sterilization pūnaewele a i ʻole offline.