Easily monitor your tubeless sealant level with the Muc-Off Hey Dipstick Tubeless Sealant Check Tool. This precision-machined tool allows you to quickly check and optimize your tubeless setup for optimal performance. It fits perfectly into Big Bore Valves for a hassle-free check. If you’re using a regular Presta valve, simply remove the core and follow the same procedure. Ensure your tubeless system is running at its best with this simple yet effective tool.