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High precision go - no go fixed gauges PG7 / PG9 / PG13.5 / PG29 / PG48 DIN-standard round steel pipe screw thread plug gauge - AliExpress Tools
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Thread Plug Gauge 6g High Precision M2 - M20 / M12x1.5 / M16x1.5 6g Inner Go-no Go Fixed Gauges - Power Tool Accessories - AliExpress
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