Perfect Pushup

I recently was able to try out Perfect Fitness's Perfect Pushup. I had wanted to try them for a very long time and was excited as I tried it out. The handles actually spin both clockwise and counter-clockwise. I'm not sure if there's a way to lock it so that it can't spin. I have read in a bodyweight book that it's good to fight resistance and spin your hands inward to create a spiraling motion that goes all the way up to your shoulders. The bottom is rubber coated so it doesn't budge beyond the spinning left and right. I don't care for them and I wouldn't use them again. I'm aware that because you can move the two handles around that you can try more variations perhaps, but I prefer grounded push-up handles.