Review on 🚴 BWSHLF Tubeless Presta Valve Stem Kit - 40mm / 44mm, Super Lightweight Alloy, Includes Value Core Remover Tool and Valve Stem Caps - Multiple Color and Size Choices (Pair) by Steven Loy

If you have a tubeless valve fitted you can fit that. The rubber is large enough to fit any tubeless rim without having to switch to a different shape. The rubber is adjusted to sink deep into the presta hole for a good seal. The coloring is perfect. As with the mucus flaps, make sure the removable cap is positioned over the core as straight as possible so it doesn't come loose. I disassembled mine when I was in a hurry, but I've also done it on diverter valves. This is user error, not product quality. I would definitely buy it again to fit a new bike.