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1/2 20 UNF 2A BEFORE PLATE SET THREAD PLUG GAGE .5 GO NO GO PD'S = .4634 & .4599

YOU ARE PURCHASING THE PICTURED BEFORE PLATE THREAD RING GAGES.SOLD BY M & J TOOLING LLCDAYTON, OHIO

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1/2 20 UNF 2A MOD BEFORE PLATE SET THREAD PLUG GAGE .5 GO NO GO PDS .4650 .4611

YOU ARE PURCHASING THE PICTURED MODIFIED BEFORE PLATE SET <