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reliable performance for demanding applications
delivering consistent dimensions and superior surface finish
delivering cleaner surfaces and tighter tolerances
66mm is a precision stub reamer designed to finish holes to ISO H4 tolerance
and similar materials
JBO Thread Plug Gauge - Metric Fine Go/No-Go - Left Hand - 6H - M19 x 1 G reliable performance for demanding applicationsThe JBO Thread Plug Gauge is a left hand, metric fine thread Go No Go gauge designed to verify internal threads with speed and precision. Sized for M19 x 1 holes in the 6H class, it helps ensure mating parts fit accurately without guesswork in critical assemblies. Built for daily workshop use, this gauge features hardened steel construction and a textured grip, delivering long lasting performance and confident handling during inspections. Go No Go
