Asimeto Plug Thread Gauge (D/E) - Metric - Right Hand - 6H - M48 x 1The Asimeto 682 Series Plug Gauge is a precision tool designed to verify the internal metric threads of M48 x 1 fasteners. Built for machinists, quality control technicians, and maintenance professionals, it delivers reliable go no go checks with a focus on accuracy and longevity. Series and size: 682 Series plug gauge with right hand thread for metric M48 x 1, conforming to 6H tolerance. End design: Precise external threads on both ends to plug into