Would not recommend these strainers for any type of solvent based finish as the adhesive securing the mesh failed miserably during the first use.Unable to return them as I was traveling and got home after the return window had closed. Never had a paint strainer fail in over 30 years until these. They might be ok for enamel based paints and mineral spirits, but definitely not for any of the lacquer or catalyzed urethane finishes. I'm going to double them up and see if it might help since I'm stuck with them.
Update 7/12/2017: Had a few more fail like the first ones I tried. I doubled up 2 filters and was able to get through two gallons of pre-catalyzed lacquer before I discarded them. At least they're not a total loss. Not sure if others are having a better experience than what I'm having, but I will not order this brand again.