Famous Airfit grips are used in pen modding very often, due to great weight, nice quality and great feeling.
Buster CYL, Saturn Mod, Air MS - that's only some of pen mods, which you can make with them.
Prices are marked in US Dollars, and they are a reference prices, so it doesn't matter, which currency you use, it will be automatically converted to Rubles anyway.
Products are custom made and can slightly differ from pictures.
How to filter pen mods on Pen Stock