NES 2-piece thread repair set for external thread use includes 2 external tools including the Nes 1A and Nes 2. The Nes 1A has a working capacity from 5/32 in. - 3/4 in. The Nes 2 has a working capacity from 11/16 in. - 1 1/2 in. Each external thread repair tool comes with a pair of 60 degree blades made from hardened steel. NES External and Internal thread restorers are the ideal tools for saving money during maintenance, plumbing, construction, agriculture, car repair and many other applications where there are components with a damaged thread. Compare the cost of disassembling the part in order to repair a component with the INSTANT repair that need to be performed with the NES External and NES Interal thread restorers.