ER38-47 清潔刷（附環圈與磁鐵）

The magnet on the back is surprisingly strong—sticks perfectly to the side of my desk so I never lose it. Cleans out the earplug nozzles much better than the little wire that came with them.

The little magnet on the end sticks perfectly to my desk drawer, so I always know where it is. The loop lets me hook it onto my keychain, and it does a solid job getting the gunk out of my earplugs' crevices.

Wasn't sure I needed a dedicated brush until I saw how much gunk the magnet kept pulling off the filters. The loop end reaches into the nozzle way better than a cotton swab, and now my earplugs actually sound clear again.