Internal Needle & Seat Pair for Holley 4150 and 2300 Carburetors, 0.101 Orifice

0.101 orifice needle and seat, quantity two (2) for many Holley 4150 4 barrel and 2300 2 barrel carburetors with internally adjustable needle and seats. Internal style - not for replacing needle and seats that can be adjusted outside of the bowl.