This Valve Assy,needle is the most expensive of the items that make up this Carburetor assembly.
The most reasonably priced component used on the Ts125 1971 1972 (r) (j) Usa (e03) Carburetor is the Screw 4x16.
Some items from this specific schematic: Valve Assy,needle, Needle,jet, Jet,main(90), Screw,throttle Stop.