Here's the PJ I use, but I'm not sure that it is the same style you use. I like this assortment as it offers the most common PJ's I use for my setup. Hope it helps.
https://www.amazon.com/TC-Motor-Carb...525583&sr=8-30
**Edit**
Alternatively, if you want a genuine product, Niche offers genuine Mikuni jets for a reasonable price. Here's a good PJ for a near-stock (or stock) setup:
https://www.amazon.com/Carburetor-In...525583&sr=8-19
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The Now: 2020 Bashan Brozz 250 ~
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The Former: CB500X (2014), Versys 650 (2010), Vulcan 750 (2002), DR350SE (1996), YZ250 (1988)