These are great! I bought 8 to house all my old drives. The plastic is sturdy, the design is simple and minimal, none have gone wrong yet.  Really easy to pop them open again and swap a drive out.In my experience these enclosures can break whether they're an expensive Lacie or G-Drive or a cheap Orico, it's all pot luck, and I've had USB controllers die in every kind of enclosure and device. So for $12 you can't go wrong. 

Question: How is the plastic holding?
Answer: These are great