Need epoxy to hold together, would be nice if MFG did this for you
As others have mentioned, the inner mandrel comes out easily.  First time I put them in, one came off and the plug got stuck.  Took 15 very annoying minutes with mirrors and tweezers to get it out, probably best to get some help. I've since remedied the issue with a tiny dab of epoxy to hold them together.  Work well and are minimal.  Cool case
Rating: 3 stars