If you need to make a repair in the field, this is your solution! The "winged spacer" design makes installation as easy as twisting a wingnut. The Emergency Valves offer a tool-free installation from the outside of the wheel, in about 1 minute. These are 0.453 size, and will fit everything from bicycles to truck tires.

• NO tools required!
• Installs from the outside of the wheel.
• Installs in about 1 minute.
• Fits standard 0.453 wheel openings.
• 20X stronger than standard valves.
• Available in two-packs.
• Quality 360 brass components.
• Made in the U.S.A.