Review on Upgraded Metal Core Silicone Air Chamber Eyeglass Nose Pads - Anti-Slip Replacement Kit For Glasses, 15X8Mm Screw-In Design (5 Pairs, Silver) by David Merculief

For my glasses they worked. I cannot speak for all glasses though. They were very easy to install, so far have been staying in, and are very comfortable.In the kit there were screws, my glasses had a clamshell like clamp with little posts inside that help the pads in. I did not use any screws, but instead spread open the clamshell like clamp, removed the original, replaced with these and closed the clamp back.