Bests & Worsts Reviews from Amazon

I purchased these to fill with alcohol to use as marker blenders for Copic and Blick alcohol markers. I didn't know if they would be able to withstand alcohol but I tested them with both 99% isopropyl and denatured (90+% ethanol) alcohol and no degradation so far. The brushes themselves have nice point and spring, so much that I may buy another set to use with watercolors and inks. Edit: I purchased another set and I also filled one up with some Higgins Black Magic drawing ink, they work perfectly as a brush pen. Pentel actual sells these prefilled with ink, I found out