Replacement bite valve for all Speedfil Hydration Systems and 5/16 inch diameter drink tubes.
Bite Valve
Fits all 5/16 in. (8 mm) diameter drink tubes
Length: 2.8 in. (7 cm)
Diameter: (widest) 0.7 in. (1.8 cm)
Weight: 5.7 grams
Material: = BPA free PP, Silicone