Keihin main jet for carburetors found on many Honda bikes.
These work on most of the stock carburetors found on na50, nb50, nc50, nu50, nq50, nx50, sa50, sb50, tg50, tg50, elite 50, spree 50, Vision, Wallaroo, and Peugeot Fox.
On Peugeot Fox, the carburetor is badged Gurtner but the jets are the same.
Definitely compare these to the jet you find in your carburetor before purchasing. Some of these models used slightly different jets depending on year and market they were sold in. For example, sometimes they have a push in style jet instead of this.
These are 8.5mm long and the threading is 6mm x 1mm
*NO returns on jets*