I realized recently that one of the rubber legs tips of my Gitzo tripod was missing. In looking for replacement tips I did some research online, called B&H camera (who didn't have them), and finally found what looks like exact replacements. I found them online on the site of a hardware company ( hardwarestore...). There's a photo on their webpage showing them and they appear to be identical to mine. The sizes look like they match up to the diameter of the leg section that they go on. The cost for a set of four 5/8" tips, including shipping to my house in the US southwest is a little over $8. They have a variety of sizes and quantities in stock, so this might be a good source for you even if your tripod has larger diameter bottom tubes than mine. I'm going to attach a photo I took this morning of my 2 remaining leg tips. I found that the leg tips I have left pull off very easily. They don't seem to have a shape that's made to stay on the legs securely. I was surprized that an $800 tripod would have such a poorly chosen part on what is otherwise a very nice piece of equipment. My plan is to glue on the replacement tip when I get it and the other two remaining ones and keep the rest for spares. I recommend that you consider doing the same thing if you have a Gitzo tripod.