Wasu nau'ikan ƙwayar bututun ƙarfe na dollex sun fi fitowa da kayan kwalliya na bututun ƙarfe, ƙugu, waɗanda aka keɓe, ƙuƙwalwa, masu saukarwa, da ƙari. Sauran fasalulluka na wannan dacewar suna da kyau lalata juriya, m da crevice resistance, m jurtedarfin ƙarfin, kaddarawa, kaddarawa, kayan aiki masu guba, suna jira. Bugu da kari, ana amfani dashi a cikin aikace-aikacen da ke tafe a masana'antar sunad da sunadarai, masana'antu takarda, condenener, masana'antar waje, da sauransu.