This is a M10 Female to 1/8 npt Male Adapter Fitting.

Made from plated steel.

Male thread is a standard tapered 1/8-27 npt thread to a Female parallel M10 X 1.0mm  approx 15mm deep.

The hole in the male threaded end is 4mm providing a good wall thickness for secure tightening and pressure retention.  

Hex size is 14mm AF. (A 14mm or 9/16 spanner should be used).

The M10 end is suitable for a banjo bolt or similar and should be sealed with a flat copper washer.

No extra postage costs for multiple orders.