Specification Brand : NGHTMRE BulletPoint1 : Fitment: Fit for CAMELBACK. The bite valves are compatible with most common hydration bladder brands BulletPoint2 : Bite Valve Replacement: Self-Sealing, have a one-piece construction so there are no water drips. Soft for faster flow from your water bladder BulletPoint3 : O-Ring: If your bladder was working fine and it now leaks where the tube connects to the bladder, the you probably lost the o-ring. Simply put this on and continue using the bladder BulletPoint4 : Easy Installation: Simple attach this nozzle to the drinking hose and mount the mouthpiece BulletPoint5 : Package Included: 4 x Bite Valve Replacement ItemName : 2024 Upgrade Bite Valve Replacement 90 Degree Silicone Mouthpiece Fit for Camelbak – Self-Sealing Design with ON/OFF Shut Off Valve Fit for Easy Water Flow Control – Soft Fit for Faster Flow, No Drips ItemTypeKeyword : outdoor-backpack-reservoirs Manufacturer : NGHTMRE PartNumber : Bite Valve Replacement ProductDescription : Fitment: Fit for CAMELBACK. The bite valves are compatible with most common hydration bladder brands Description: Bite Valve Replacement: Self-Sealing, have a one-piece construction so there are no water drips. Soft for faster flow from your water bladder. Mouthpiece: ON/OFF Shut Off Valve allows you to easily control water flow with the yellow lever. Compatible with drinking tubes and bite valves of most hydration bladders O-Ring: If your bladder was working fine and it now leaks where the tube connects to the bladder, the you probably lost the o-ring. Simply put this on and continue using the bladder Easy Installation: Simple attach this nozzle to the drinking hose and mount the mouthpiece