Choose the jets size from the sales drop down list. Only ever use genuine Mikuni parts when attempting to correctly tune out rich or lean engine conditions.
This N101.043 Pilot Jet is used in Mikuni butterfly type carbs often found in some stationary engines and other applications. The thread has an outside diameter of 6mm and the jet has an overall length is 16mm.
(The background lines are at 1 & 10 mm spacings)