Unlike other kits, these light weight anodized aluminum thread gauges are threaded with both male and female ends so you can identify sizes quickly! .
NPT/UN Thread Identification for male and female SAE threads includes: NPT/NPSM, O-Ring Face Seal, 37° JIC, Flareless, Straight Thread O-Ring, 45° Flare, Inverted Flare and Brass Compression.
Kit includes carrying case, 45 anodized aluminum gauges sized from 1/8-27 to 2 ½-12 for Pipe and 5/16-24 to 2 ½-12 for UN/UNF 2A/2B threads, Thread and Port Guide book and a laminated NPT/UN Thread ID chart.