Fidlock Valve Bottle Cap - black

Replacement bottle cap for magnetic-mechanical bottle mounting system All bottles and their matching caps age - even the TWIST bottles are not magic. If the old bottle is still fine, but the cap is worn down, chewed up, or developed leaking, simply replace it with the bottle cap suitable for TWIST bottle 800, 590 and TWIST bottle 450. Features of the Fidlock Valve Bottle Cap Replacement bottle cap with high flow, self-sealing and leak-proof valve, and optional dirt cover. Exclusively fits TWIST bottle 800, 590 and 450. Not suitable for other TWIST bottles