Thread Gauges Gas Go No Go + Screw Caps

3/4" 1/2" 3/8" 1" Gas Thread Gauge + Thread Plugs Includes: 1x G 3/4" GO Gas Thread Gauge (Right-Hand Thread) 1x G 3/4" NOGO Gas Thread Gauge (Left-Hand Thread) 1x G 3/4" GO/NOGO Gas Thread Plug (Right-Hand Thread, Left-Hand Thread) 1x G 1" A GO Gas Thread Gauge (Right-Hand Thread) 1x G 1" A NOGO Gas Thread Gauge (Left-Hand Thread) 1x G 1" A GO/NOGO Gas Thread Plug (Right-Hand Thread, Left-Hand Thread) 1x G 3/8 Tol.A GO Gas Thread Gauge (Right-Hand Thread) 1x Thread Gauge Gas G 3/8 Tol.A NOGO (Left-Hand Thread) 1x Gas Thread Plug G 3/8 ISO 228 GO/NOGO (Right-Hand Thread, Left-Hand Thread) 1x Gas Thread Gauge G 1/2" GO (Right-Hand Thread) 1x Gas Thread Gauge G 1/2" NOGO (Left-Hand Thread) 1x Gas Thread Plug G 1/2" GO/NOGO (Right-Hand Thread, Left-Hand Thread)