1/8 NPT Female To 1/8 NPT Male Restrictor Coupling Adapter Brass Oil Fitting Male Fitting Thread: 1/8 NPT Female Fitting Thread: 1/8 NPT Material: Brass Length: 21mm Restrictor hole size: 0.065” Quantity: 1 piece per order Fast and free shipping from USA! Oil inlet restrictor for T series, T3, T3/T4, T04, T72 etc. turbos (also larger ball bearing turbos such as GT4088R, GT4094R, GT4294R, GT4202R). Also used in heating, cooling, HVAC, fluid transfer, plumbing, transportation, automotive Motorcycle and marine applications