RATTPM12 Rivet Nut Tool (1/2"-12MM Capacity)This aggressively priced tool installs up to 1 2" rivet nuts using its advanced SPIN PULL SPIN setting sequence. 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. Comes equipped with UNC sizes 6 32, 8 32, 10 24, 10 32, 1 4 20 and 5 16 18, 3 8 16 and 1 2 13 mandrills