*50mm Tubeless Valve Stem-Presta Bk (Pair) Front Hydration Systems or adjust scoops (from 1

or adjust scoops (from 1 to 4) based on your needs—perfect for customizing intensity during training or races

easy-to-read display

its textured Tex finish ensures a secure hold in all conditions

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size to hold all of your swim accessories without feeling too bulky

*50mm Tubeless Valve Stem-Presta Bk (Pair) Front Hydration Systems or adjust scoops (from 1The Profile Design 50mm Tubeless Presta Valve Stem pair offers reliable performance for tubeless tire setups. Crafted for durability and airtight sealing, these black valve stems ensure easy installation and maintain optimal tire pressure. Their 50mm length fits a wide range of rims, making them ideal for advanced cyclists seeking secure, tubeless compatibility without compromising speed or efficiency.