Marson-brand Model SST is versatile, low cost, spin/spin pneumatic rivet nut production tool. Complete with a quick-change nosepiece assembly and standard socket head cap screw mandrel, tool offers convenient replacement and changeover. To increase its versatility, each unit comes equipped with 2 nosepieces and mandrels for accommodating installation of rivet nuts ranging in size from 4 mm and 8 to 32 in. to 8mm and 5/16 to 18 in.