Seti ya Ziwiya Zophikira Lena ndi seti ya ziwiya zophikira zisanu ndi zitatu zopangidwira kuphika kwapakhomo. Seti iyi ili ndi miphika ya masentimita 18, 20 ndi 26, poto lathyathyathya la masentimita 26 komanso zivundikiro zogwirizana nazo. Chivundikiro chilichonse chili ndi chitsulo chosachita dzimbiri chokhala ndi mabowo a makulidwe osiyanasiyana, kotero kuti chakudya chikhoza kusefedwa popanda zida zina zowonjezera. Chivundikiro chikhoza kuzunguliridwa kuti chitseke mbali zokhala ndi mabowo ndi kusunga nthunzi mkati mwa mphika. Thupi la mphika ndi zivundikiro zili ndi mbali zozungulira komanso zokutidwa ndi seramiki yosakanda mosavuta yomwe ndi yosavuta kutsuka. Zogwirira za Bakelite zosapya ndi moto zimapereka kagwiridwe kabwino.