They aren't big enough for your fingers, so you can't use them for Chinese finger clamps, FYI. But they will replace the brake lines .10/10 will buy again
To my surprise, the products work great. I used it to repair a 2002 Grand Prix power steering line. The way GM laid out the line made it difficult to reinstall the new one I bought. I cut the pipe and bend it with my knowledge of commercial energy. I used this item to connect the pipe where I cut it. So far everything works great.