pˈaʊdɚɹˈæktʃuːˌeɪɾᵻd fˈæsənɚz ɑːɹ mˌeɪd ʌv spˈɛʃəl hˈiːttɹˈiːɾᵻd stˈiːl; kˈɑːmən nˈeɪlz ɑːɹ ʌnsˈeɪf fɔːɹ ðɪs ˌæplɪkˈeɪʃən.
Powder-actuated fasteners are made of special heat-treated steel; common nails are unsafe for this application.