The construction is really strong and the action is very smooth. They're a bit smaller than the Destaco versions I've seen, but that shouldn't be a problem. The screws are standard 5/16 threads, not metric. So if you want to secure the clamps, that's no problem. (If you do, Amazon sells tips that come with four 1/2" canes that go well with standard 5/16 studs: Essential Medical Supply T50012g Quad Cane Tips, Grey, 1/2". Bottom line great price and quality.