Prime-Line RP77210 Tube Bending Spring Set, 1/4 In., 3/8 In., 1/2 In., and 5/8 In. (1 Set)

They work.. Not sure how long it'll last, seems pretty thin compared to my last set, but for a cheap quick fix it worked fine, ill update when they finally break or wear out

My old ones finally kinked up so much that they were unusable. These are good quality and should last a while.

I've tried using these things a few times and they are more aggravation than they're worth. Spend the extra money and get an actual bender. You'll be much happier with lower blood pressure.

A must for trying to bend soft copper, installed mini split AC and was crimping the bends, these made it so easy ...

The 3 smaller sizes seem to fit and function properly although the wire gauge is much smaller (.050) than my old USA made units (.065). The 5/8" spring would not fit properly over the tubing. I measured all the IDs and found the smaller ones had .010 to .015 clearance but the 5/8" was .003 to .005 larger. This made it very difficult to get on the tubing and impossible to remove once the bend was complete. If you only need to bend 1/4", 3/8", or 1/2" these should work on aluminum and soft copper. The 5/8" is worthless.

I found the product excellent, it worked like a champ to bend 3/8" thin wall copper tubing.

Good

Not robust enough. Will not last.