I use these on a solid axle food machine. The original had a set screw that just pressed on the surface. It wasn't the best design and failed several times in the field. I kept stopping to tighten it and I didn't always have the right tool. This type of clamp is more secure and requires more effort to keep it from moving. After a season it works perfectly. I see no reason to fail. Even if I refused, I have spare parts because the price was very reasonable.