Features The Marson rivet-nut kit contains the 39300 thread-setter toolin a p...Features The Marson rivet-nut kit contains the 39300 thread-setter tool in a plastic case with 8-32 10-24 10-32 and 1/4-20 mandrels and nosepieces wrench and instructions The kit contains assorted ribbed style rivet-nuts; 12 ea. 8-32 10-24 10-32;...more