For plumbing of mechanical oil pressure gauges.
Tube outside diameter 3/16" (4.8mm).
Brass connector union on each end.
Tube nuts are both 7/16" AF (11mm) spanner size.
1/8" BSP female thread with male cone fitting on one end
and 1/8" NPT female thread with female cone fitting on the other end.
OIL PRESSURE GAUGE TUBING KIT #OILTUBE3