0000-160 2B Plug "No-Go" Gage NS stands for (American) “National Standard” miniature Thread series. This gage is one piece handle containing "No-Go" Precision Thread Gage made of High Speed Steel then hardened. Standard fit is 2B Picture is representative of part. Brand is;" MiniTaps" made specifically for us in Switzerland. Prices includes certification with factory measurements and serialized handle. included in price.