This amazing riveter kit contains a heavy duty setting tool; four nosepieces; and ten each of 6-32, 8-32, 10-24, and 1/4-20 inserts. Rivet Nut Insert Kit. Kit contains a heavy duty setting tool, four nosepieces, 10 each 6-32, 8-32, 10-24 and 1/4-20 inserts.