Well built, functions with some help
Your review: These door stops are super solid and feel like they will last a really long time. They work well, as long as you really mash the plungers down. You can't be gentle with them as you won't create enough friction to keep the plungers from creeping up. They feel so solid that I'm not afraid to stomp on them. It could also be that I'm using them on carpet and it just needs a little more bite than other situations.
Pros: Strong, solid, durable
Cons: Some creep with improper deployment.