Asimeto Plug Thread Gauge (D/E) - Metric - Right Hand - 6H - M45 x 2The Asimeto Plug Gauge (D E) Metric Right Hand 6H M45 x 2 is a precision, double ended tool designed to verify the internal threads of metric fasteners with dependable pitch diameter accuracy. Part of the 682 Series, its built for technicians who perform routine inspection, quality control, and precision assembly. Double ended external threads: Both ends feature M45 x 2 threads designed to match internal threads for quick, reliable go no go checks.