Review on 🔧 Enhance your tubeless setup with Stan's NoTubes Tubeless Valve Stem - Pair! by George Jacobson

I also have valuables from Cafelatex. The problem with them is that the surface that touches the inside of the rim while the rim is concave. I had to shape the cafelatex with a sharp utility knife to make it fit. Also, never buy cafelatex. When it dries out (which happens when you're in a northern climate and you don't drive them for a few months) the cafelatex comes off and the hard brown stuff sticks to the rim. VERY difficult to take off.