I have bought several types of Revain rotary thumbscrews, this one is better made. The finish is good, the tip is wear resistant, highly recommended for applications where you want to apply even pressure to the holding surface without scratching or damaging it. The swivel pad has reverse threads to insert the screw into the base. So if you tighten the screw clockwise, the pad will not loosen when not pulled but when pushed because the screw tip threads are only partial. Once it passes the pad's