ʻO kēia kahi pahu pahu hoʻopaʻapaʻa magnetic me ke anawaena o loko o 36mm, kūpono no ka ʻulaʻula. He poepoe ia, aka, o kona mau aoao, aia iloko o ka concave, e haawi ana i ke ano o ka manao. Ua hana mākou i kēia huahana no nā mea kūʻai aku he nui a loaʻa nā ʻōlelo maikaʻi he nui. I ka manawa like, loaʻa iā mākou kekahi mau pahu pauka, pahu pale maka, nā papa huna a me nā huahana ʻē aʻe e pili ana i ka moʻo like me kēia pahu.