1. 11-Piece Value Set: You will receive 6 sets of all-silicone water bottle dispensing valves (one silicone valve and one plastic valve cap) and 4 water bottle gaskets. It comes with a screwdriver to remove the dispenser valve for easy replacement, so you always have a valve when you need it. 2. Materials: The water bottle dispensing valve is made of silicone and plastic, which is sturdy and durable. The water bottle lip gasket is made of silicone material, which is elastic and durable. You can use them with confidence. 3. How to Install: First, use the included screwdriver to push out the old valve from the outside along the cover wall. Second, assemble the valve as shown in the picture. Third, install the valve in the direction shown and press until you hear a click. Installation is complete. 4. Compatibility: These replacement valves and lip gaskets are compatible with Gatorade GX 30 oz water bottles. You can enjoy seamless hydration without worrying about leaks or ill-fitting anymore.