6H 1PCS M0.8M1M2M3M4M5M6M8M10M12M14M16M18-M30internal thread plug gauge, check tool, internal thread gauge, coarse thread gauge

6H 1PCS M0.8M1M2M3M4M5M6M8M10M12M14M16M18-M30internal thread plug gauge, check tool, internal thread gauge, coarse thread gauge

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