Perforated Corner Bead ndiyo kuthetsa kukhalapo kwa nthawi yayitali yomanga nyumba ya ngodya si yowongoka, yosagwirizana, osati yokongola, yosavuta kuwononga ndi mavuto ena apamwamba ndi kafukufuku wodziimira ndi chitukuko.
Metal Corner Bead imagwiritsidwa ntchito popereka kumaliza kwapamwamba komanso chitetezo cholimba pamakona a drywall.Chida chomaliza chamtundu uwu chimapangidwa ndi staple, kukhomeredwa misomali kapena kukhomedwa m'malo mwake.Ma Flanges amapangidwa mozama kwambiri ndipo amapangidwa kuti amamatire bwino kwambiri.Imatengedwa ngati chinthu choyambirira cha drywall kumaliza pakona.Izi zimaphatikiza njira yapadera yopangira, yokhala ndi zitsulo zokongoletsedwa mwapadera kuti zipereke kumalizidwa kokhazikika, kwapamwamba kwambiri nthawi iliyonse.