The transversal cap is has many names, the most common would be Calligraphy Cap. This cap sprays a very hard chisel line.
I recommend this product
great calligraphy cap
Love this cap for doing chisel writing and blackletter. It's a little skinnier than I'd like so I need to try the new fat version. The tip is a bit hard to spin unless you have some plier on hand.
More than just a calligraphy cap
This is a really amazing cap you can do a lot of interesting things with!
the best cap
the best cap to get from the best suplier SPRAYPLANET