One of the most used pieces of equipment I have. What makes these push up grips so great is that they can rotate to different hand positions. Because they rotate you need to work to keep these stable while doing pushups. This works stabilizing muscles in your arms. Using pushup grips helps ensure you do a full push up where your body ends up dropping below the hand grip, providing a full range exercise.
The great thing about these is that they are pretty affordable. I have to confess, these aren’t the exact same grips I have but appear to be the closest thing I could find online.