UNEF
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11) 7/8 x 20 UNEF Go / NoGo Screw Plug Thread Gauge 2BSpecial Price £106.06 Regular Price £151.517/8 x 20 UNEF Go / NoGo Screw Plug Thread Gauge 2B
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12) 15/16 x 20 UNEF Go / NoGo Screw Plug Thread Gauge 2BSpecial Price £106.06 Regular Price £151.5115/16 x 20 UNEF Go / NoGo Screw Plug Thread Gauge 2B
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13) 1 x 20 UNEF Go / NoGo Screw Plug Thread Gauge 2BSpecial Price £106.06 Regular Price £151.511 x 20 UNEF Go / NoGo Screw Screw Plug Thread Gauge 2B