These economical rivet nut tools are the lowest priced SPIN-PULL-SPIN tools on the market. The rivet nut quickly spins on when pressure is applied to the mandrill. Pull the trigger and the rivet nut is pulled and installed, release the trigger and the mandrill spins out of the rivet nut. The setting cycle is about 2 seconds. The fully adjustable stroke for accurate insert placements requires less operator skill.