This kit is for oil based vacuum pumps. This kit will eliminate most of the oil loss from the pump and route the vapor outside if necessary.
Kit comes with a 3/4″ pipe nipple, some pumps may need the M24 fitting. Call if you need help determining what fitting your pump will require.
Note: This kit does not come with the pictured hose, you will need to provide your own 1/2″ hose to combine with this kit.